1 |
cardiovascular
(8455 times)
|
Cardiology (1914 times)
|
HR (804 times) CI (738 times) BP (546 times)
|
1975 Cardiovascular activity of aromatic guanidine compounds.
|
2 |
coefficient of variation
(7364 times)
|
Physiology (522 times)
|
ICC (665 times) SD (401 times) HPLC (151 times)
|
1971 Does curare affect transmitter release?
|
3 |
cyclic voltammetry
(3939 times)
|
Chemistry (1043 times)
|
EIS (1108 times) SEM (801 times) DPV (645 times)
|
1984 A voltammetric investigation of TCNQ-containing bilayer lipid membranes.
|
4 |
conduction velocity
(682 times)
|
Physiology (229 times)
|
APD (63 times) AF (56 times) EMG (46 times)
|
1969 Reticulo-ruminal mechanoreceptors in sheep.
|
5 |
crystal violet
(664 times)
|
Environmental Health (131 times)
|
MB (87 times) SERS (78 times) MG (77 times)
|
1971 Bacterial cell division regulation: physiological effects of crystal violet on Escherichia coli lon + and lon - strains.
|
6 |
cross-validation
(404 times)
|
Environmental Health (68 times)
|
SVM (49 times) RF (33 times) AUC (32 times)
|
1993 VO2max estimation from a submaximal 1-mile track jog for fit college-age individuals.
|
7 |
consonant-vowel
(237 times)
|
Audiology (91 times)
|
REA (20 times) VOT (12 times) DL (11 times)
|
1974 Mechanisms of aural encoding: VIII. Phonetic interference and context-sensitive coding in short-term memory.
|
8 |
corneal volume
(208 times)
|
Ophthalmology (74 times)
|
CCT (54 times) CT (43 times) ACD (34 times)
|
1982 [Effect of systemic arterial and venous pressures on blood volume in the cerebral vessels].
|
9 |
conventional
(189 times)
|
Nutritional Sciences (41 times)
|
GF (140 times) SPF (18 times) Gn (6 times)
|
1976 Effect of dietary lactose at levels comparable to human consumption on cholesterol and bile acid metabolism of conventional and germfree rats.
|
10 |
cardioversion
(146 times)
|
Cardiology (96 times)
|
AF (122 times) SR (36 times) LA (19 times)
|
1985 Echocardiographic left atrial dimension as a predictor of maintaining sinus rhythm after conversion of atrial fibrillation.
|
11 |
cyclic voltammogram
(128 times)
|
Chemistry (51 times)
|
EIS (15 times) XRD (15 times) SEM (14 times)
|
1990 A new electrochemical method for the production of stable ascorbate free radicals.
|
12 |
conventional ventilation
(118 times)
|
Pediatrics (34 times)
|
HFOV (36 times) HFJV (19 times) CLD (15 times)
|
1978 Fungi in libraries: an aerometric survey.
|
13 |
contingent valuation
(106 times)
|
Health Services (37 times)
|
WTP (66 times) WTA (7 times) CBA (3 times)
|
1990 Willingness to pay for antihypertensive therapy--results of a Swedish pilot study.
|
14 |
chorionic villi
(103 times)
|
Obstetrics (39 times)
|
AF (17 times) MSCs (9 times) 7-DHC (5 times)
|
1986 Enzymatic activity of glycogen metabolism in chorionic villi.
|
15 |
coxsackievirus
(103 times)
|
Virology (36 times)
|
EV (31 times) HFMD (31 times) EVs (10 times)
|
1982 Dietary hepatic cholesterol elevation: effects on coxsackievirus B infection and inflammation.
|
16 |
closing volume
(94 times)
|
Pulmonary Medicine (44 times)
|
VC (24 times) CC (18 times) RV (14 times)
|
1974 Relation between pulmonary gas exchange and closing volume before and after substantial weight loss in obese subjects.
|
17 |
computer vision
(86 times)
|
Biosensing Techniques (19 times)
|
AI (12 times) CNN (7 times) DL (6 times)
|
1989 New trends in computer graphics and computer vision to assist functional neurosurgery.
|
18 |
cerebral vasospasm
(70 times)
|
Neurology (24 times)
|
SAH (40 times) aSAH (18 times) DCI (12 times)
|
2003 Platelets play an essential role in the aetiology of cerebral vasospasm after subarachnoid haemorrhage.
|
19 |
cryoglobulinemic vasculitis
(67 times)
|
Rheumatology (25 times)
|
HCV (28 times) DAAs (7 times) MC (7 times)
|
2000 Birmingham vasculitis activity score, disease extent index and complement factor C3c reflect disease activity best in hepatitis C virus-associated cryoglobulinemic vasculitis.
|
20 |
central venous
(66 times)
|
Anesthesiology (10 times)
|
PV (8 times) PA (5 times) CI (4 times)
|
1980 Complications of vascular catheterization in the critically ill. A prospective study.
|
21 |
Chlorella vulgaris
(57 times)
|
Environmental Health (14 times)
|
SP (5 times) AC (3 times) LTBMC (3 times)
|
1998 Distinctive origins of group I introns found in the COXI genes of three gree algae.
|
22 |
constant voltage
(51 times)
|
Environmental Health (7 times)
|
CC (19 times) CI-AKI (3 times) DBS (3 times)
|
1987 Photon noise and constant-volume operators.
|
23 |
cresyl violet
(50 times)
|
Neurology (10 times)
|
GFAP (5 times) i.p (4 times) ir (4 times)
|
1989 Cresyl violet: a rapid, simple, easily interpretable stain for detecting Pneumocystis carinii in sputum.
|
24 |
curriculum vitae
(50 times)
|
Nursing (6 times)
|
EM (2 times) ACGME (1 time) AEs (1 time)
|
1985 How to present a curriculum vitae.
|
25 |
critical velocity
(48 times)
|
Physiology (26 times)
|
ARC (7 times) HR (4 times) MLSS (3 times)
|
1992 The accuracy of the critical velocity test for predicting time to exhaustion during treadmill running.
|
26 |
cardiovascular disease
(42 times)
|
Medicine (7 times)
|
RA (5 times) CKD (4 times) ACS (2 times)
|
1982 Five-year findings of the hypertension detection and follow-up program. III. Reduction in stroke incidence among persons with high blood pressure. Hypertension Detection and Follow-up Program Cooperative Group.
|
27 |
variation coefficient
(42 times)
|
Medicine (6 times)
|
SD (6 times) DO (2 times) ECD (2 times)
|
1986 DNA flow cytometry of cells obtained from old paraffin-embedded specimens. A comparison with results of scanning absorption cytometry (a methodological study).
|
28 |
continuous-variable
(36 times)
|
Ophthalmology (12 times)
|
DV (4 times) BI (3 times) OAM (3 times)
|
2006 Entanglement reciprocation between qubits and continuous variables.
|
29 |
craniovertebral
(33 times)
|
Neurosurgery (6 times)
|
NPQ (6 times) CD (3 times) HPSCI (3 times)
|
1989 Pathogenesis of naturally acquired bovine respiratory syncytial virus infection in calves: morphologic and serologic findings.
|
30 |
cephalic vein
(30 times)
|
General Surgery (11 times)
|
CIED (5 times) EJV (5 times) AV (3 times)
|
1996 Comparison of vascular effects of calcitonin gene-related peptide and lidocaine on human veins.
|
31 |
collective variable
(29 times)
|
Chemistry (23 times)
|
MD (6 times) MTD (2 times) PMF (2 times)
|
2001 Collective variable theory for optical solitons in fibers.
|
32 |
cardiovascular risk
(27 times)
|
Medicine (5 times)
|
ED (3 times) HDL-C (3 times) BMI (2 times)
|
1991 Associations of daily mortality and air pollution in Los Angeles County.
|
33 |
compensation voltage
(27 times)
|
Chemistry Techniques, Analytical (23 times)
|
FAIMS (19 times) MS (4 times) DMS (3 times)
|
2002 Application of ESI-FAIMS-MS to the analysis of tryptic peptides.
|
34 |
cavum vergae
(26 times)
|
Neurology (5 times)
|
CSP (23 times) CSF (3 times) CT (3 times)
|
1981 Age related incidence of cavum septi pellucidi and cavum vergae on CT scans of pediatric patients.
|
35 |
cerebrovascular
(26 times)
|
Neurology (8 times)
|
BP (6 times) AD (4 times) HR (2 times)
|
1998 "U" curve association of blood pressure and mortality in hemodialysis patients. Medical Directors of Dialysis Clinic, Inc.
|
36 |
connected vehicle
(26 times)
|
Traumatology (17 times)
|
TTC (3 times) CPI (2 times) KF (2 times)
|
2017 Longitudinal safety evaluation of connected vehicles' platooning on expressways.
|
37 |
cervicovaginal
(24 times)
|
Cell Biology (7 times)
|
TFV (5 times) CVF (3 times) HIV (3 times)
|
1995 A clinical trial of the AutoPap 300 QC system for quality control of cervicovaginal cytology in the clinical laboratory.
|
38 |
Chan-Vese
(24 times)
|
Medical Informatics (10 times)
|
CT (3 times) LS (2 times) MRI (2 times)
|
2009 A study on the feasibility of active contours on automatic CT bone segmentation.
|
39 |
collateral ventilation
(24 times)
|
Pulmonary Medicine (15 times)
|
FEV1 (8 times) SGRQ (5 times) 6MWT (4 times)
|
1987 Collateral ventilation of obstructed lung during high-frequency oscillation in dogs and pigs.
|
40 |
contractile vacuole
(24 times)
|
Cell Biology (10 times)
|
CVC (3 times) NCL (2 times) CICR (1 time)
|
1993 External ions and direct membrane effects of enkephalins on Amoeba proteus.
|
41 |
cardiovascular events
(23 times)
|
Cardiology (4 times)
|
CHD (2 times) CKD (2 times) CVD (2 times)
|
2007 The cost-utility of cinacalcet in addition to standard care compared to standard care alone for secondary hyperparathyroidism in end-stage renal disease: a UK perspective.
|
42 |
central vein
(23 times)
|
General Surgery (3 times)
|
PV (4 times) CVC (2 times) PA (2 times)
|
1990 Pharmacokinetics of recombinant human superoxide dismutase.
|
43 |
Coriolus versicolor
(22 times)
|
Complementary Therapies (5 times)
|
IL (3 times) IFN (2 times) LPS (2 times)
|
2002 Coriolus versicolor: a medicinal mushroom with promising immunotherapeutic values.
|
44 |
cutaneous vasculitis
(22 times)
|
Rheumatology (11 times)
|
HSP (6 times) ACR (4 times) HV (4 times)
|
1996 Serum immunoglobulin estimation in 30 cases of cutaneous vasculitis.
|
45 |
cyclic variation
(22 times)
|
Cardiology (14 times)
|
IB (7 times) IBS (7 times) LV (7 times)
|
1994 Quantitative myocardial ultrasonic integrated backscatter measurements during contrast injections.
|
46 |
carbonyl value
(21 times)
|
Oils (8 times)
|
AV (11 times) PV (10 times) TPC (8 times)
|
1991 Effects of dietary pantethine levels on contents of fatty acids and thiobarbituric acid reactive substances in the liver of rats orally administered varying amounts of autoxidized linoleate.
|
47 |
circumvallate
(21 times)
|
Biochemistry (6 times)
|
FF (5 times) SP (4 times) FG (2 times)
|
1991 Adenylate cyclase responses to sucrose stimulation in membranes of pig circumvallate taste papillae.
|
48 |
controlled ventilation
(21 times)
|
Veterinary Medicine (9 times)
|
SV (10 times) CDH (2 times) CDHV (2 times)
|
1982 Influence of ventilation on response to fluid load in dogs: body water and albumin distribution.
|
49 |
conventional mechanical ventilation
(21 times)
|
Anesthesiology (4 times)
|
HFOV (10 times) ARDS (5 times) HFJV (2 times)
|
1987 Comparison of high-frequency jet ventilation with conventional mechanical ventilation for bronchopleural fistula.
|
50 |
circular vection
(20 times)
|
Otolaryngology (9 times)
|
OKN (4 times) AMD (1 time) CTSIB (1 time)
|
1981 Circularvection: psychophysics and single-unit recordings in the monkey.
|
51 |
colour vision
(19 times)
|
Ophthalmology (7 times)
|
CS (8 times) VF (5 times) VA (4 times)
|
1986 Evaluation of the visual system in multiple sclerosis. II. Colour vision.
|
52 |
CoreValve
(19 times)
|
Cardiology (14 times)
|
TAVI (7 times) TAVR (7 times) AR (4 times)
|
2012 [Conduction disturbances and permanent cardiac pacing after transcatheter implantation of the CoreValve aortic bioprosthesis: initial single centre experience].
|
53 |
cell viability
(17 times)
|
Ophthalmology (4 times)
|
ROS/RNS (3 times) ALP (2 times) cTRI (2 times)
|
1990 Examination of toxicity of diisopropylammonium dichloracetate (DADA), remedies for cardiac diseases, toward isolated rat hepatocytes.
|
54 |
contrast venography
(16 times)
|
Radiology (6 times)
|
DVT (12 times) DUS (2 times) NPV (2 times)
|
1984 Radionuclide plethysmography and Tc-99m red blood cell venography in venous thrombosis: comparison with contrast venography.
|
55 |
crossing vessels
(15 times)
|
Urology (8 times)
|
UPJ (7 times) UPJO (7 times) fMRU (4 times)
|
2010 Histologic differences between extrinsic and intrinsic ureteropelvic junction obstruction.
|
56 |
community violence
(13 times)
|
Violence (6 times)
|
PTSD (2 times) ACEs (1 time) CAN (1 time)
|
2001 A mediational model for the impact of exposure to community violence on early child behavior problems.
|
57 |
contrast ventriculography
(13 times)
|
Nuclear Medicine (9 times)
|
LV (5 times) EF (4 times) EDV (2 times)
|
1979 Validity of left-ventricular ejection fractions measured at rest and peak exercise by equilibrium radionuclide angiography using short acquisition times.
|
58 |
cowpox virus
(13 times)
|
Drug Therapy (7 times)
|
CDV (4 times) TK (3 times) HSV-1 (2 times)
|
2002 The enantiomers of carbocyclic 5'-norguanosine: activity towards Epstein-Barr virus.
|
59 |
cylindrical vector
(13 times)
|
Ophthalmology (10 times)
|
DOE (1 time) EM (1 time) FAT (1 time)
|
2015 Unveiling the photonic spin Hall effect of freely propagating fan-shaped cylindrical vector vortex beams.
|
60 |
carvedilol
(12 times)
|
Pharmacology (6 times)
|
SO (2 times) ADRBs (1 time) ALP (1 time)
|
2002 [Efficacy of native carvedilol in patients with essential hypertension].
|
61 |
Chromobacterium viscosum
(12 times)
|
Biochemistry (3 times)
|
CTAB (4 times) MBGs (3 times) ACD (1 time)
|
1963 MODIFICATION OF HOST RESPONSES TO BACTERIAL ENDOTOXINS. I. SPECIFICITY OF PYROGENIC TOLERANCE AND THE ROLE OF HYPERSENSITIVITY IN PYROGENICITY, LETHALITY, AND SKIN REACTIVITY.
|
62 |
coated vesicles
(12 times)
|
Cell Biology (6 times)
|
10B-BPA (1 time) BNCT (1 time) CAR (1 time)
|
1983 Tubulin as a molecular component of coated vesicles.
|
63 |
coronary vein
(12 times)
|
Cardiology (6 times)
|
LV (3 times) PV (3 times) LDLT (2 times)
|
1990 Effect of human recombinant interleukin-2 on isolated rabbit femoral artery and porcine coronary artery and vein.
|
64 |
Carvacrol
(11 times)
|
Nutritional Sciences (2 times)
|
OEO (2 times) AFB1 (1 time) AITC (1 time)
|
2017 Effect of oregano essential oil and carvacrol on Cryptosporidium parvum infectivity in HCT-8 cells.
|
65 |
calicivirus
(10 times)
|
Virology (8 times)
|
NoV (4 times) SaV (3 times) RT-PCR (2 times)
|
1997 Phylogenetic analysis of the Caliciviruses.
|
66 |
caudal vein
(10 times)
|
Embryology (3 times)
|
BMP (2 times) CVP (2 times) DA (2 times)
|
1982 Can central venous blood replace mixed venous blood samples?
|
67 |
cerebellar vermis
(10 times)
|
Brain (4 times)
|
CI (3 times) BD (2 times) CC (2 times)
|
2005 Regional heterogeneity of 5-HT1A receptors in human cerebellum as assessed by positron emission tomography.
|
68 |
cruciferous vegetables
(10 times)
|
Nutritional Sciences (4 times)
|
CIs (3 times) RR (3 times) CRC (2 times)
|
2007 Watercress supplementation in diet reduces lymphocyte DNA damage and alters blood antioxidant status in healthy adults.
|
69 |
cytolytic vaginosis
(10 times)
|
Gynecology (7 times)
|
VVC (6 times) BV (2 times) AUC (1 time)
|
1992 Cytolytic vaginosis: a common cause of cyclic vulvovaginitis.
|
70 |
vital capacity
(10 times)
|
Pulmonary Medicine (5 times)
|
CPT (2 times) CE (1 time) FRC (1 time)
|
1976 [Analysis of flow-volume curves in asthmatic patients and their application in pharmacodynamic tests (author's transl)].
|
71 |
cecal volvulus
(9 times)
|
Medicine (3 times)
|
AV (1 time) CT (1 time) SV (1 time)
|
2000 Cecal volvulus: report of seven cases and literature review.
|
72 |
common variant
(9 times)
|
Medicine (4 times)
|
AD (3 times) CMJ (1 time) DAM (1 time)
|
2010 Distress, quality of life, neuroticism and psychological coping are related in head and neck cancer patients during follow-up.
|
73 |
composition vector
(9 times)
|
Medical Informatics (5 times)
|
CCV (2 times) BLAST (1 time) KOA (1 time)
|
2007 Phylogenetic analysis using complete signature information of whole genomes and clustered Neighbour-Joining method.
|
74 |
conception vessel
(9 times)
|
Complementary Therapies (6 times)
|
EA (2 times) MBPU (2 times) ABT (1 time)
|
2008 Safe depth of abdominal acupoints in pediatric patients.
|
75 |
conventionally reared
(9 times)
|
Allergy and Immunology (4 times)
|
GF (8 times) SPF (3 times) ATS (1 time)
|
1969 The effects of heterologous anti-thymocyte sera in mice. 3. High susceptibility of germfree mice to the suppressive effects of IgG from rabbit anti-mouse thymocyte serum.
|
76 |
crystal violet dye
(9 times)
|
Environmental Health (5 times)
|
ALG (1 time) ALG-Aw (1 time) AW (1 time)
|
2015 Synthesis, characterisation and application of copper modified brookite titania photocatalyst activated by visible light.
|
77 |
cyclic voltammetry curve
(9 times)
|
Biomedical Engineering (2 times)
|
EIS (3 times) SEM (3 times) XRD (2 times)
|
2014 Enhanced reductive transformation of p-chloronitrobenzene in a novel bioelectrode-UASB coupled system.
|
78 |
Cache Valley
(8 times)
|
Tropical Medicine (3 times)
|
EEE (2 times) BAT (1 time) CAL (1 time)
|
1990 [Concomitant activity of 2 bunyaviruses in horses in Argentina].
|
79 |
cerebellar volume
(8 times)
|
Neurology (3 times)
|
MRI (3 times) PFV (2 times) ANCOVA (1 time)
|
2006 Reduction in cerebellar volumes in preterm infants: relationship to white matter injury and neurodevelopment at two years of age.
|
80 |
circumvallate papillae
(8 times)
|
Biochemistry (2 times)
|
NC (2 times) AUC (1 time) DPP4 (1 time)
|
2008 G alpha14 is a candidate mediator of sweet/umami signal transduction in the posterior region of the mouse tongue.
|
81 |
cobra venom
(8 times)
|
Allergy and Immunology (2 times)
|
CAR (2 times) MS (2 times) RV (2 times)
|
1969 Passive hemolysis by serum and cobra venom factor: a new mechanism inducing membrane damage by complement.
|
82 |
complex V
(8 times)
|
Genetics, Medical (2 times)
|
ATP (2 times) ETC (2 times) mtDNA (2 times)
|
2014 Common and Novel TMEM70 Mutations in a Cohort of Italian Patients with Mitochondrial Encephalocardiomyopathy.
|
83 |
contraceptive vaccines
(8 times)
|
Reproductive Medicine (7 times)
|
CDRs (2 times) 5'-RACE (1 time) aa (1 time)
|
2001 Cloning and sequencing of cDNA encoding for a novel human testis-specific contraceptive vaccinogen: role in immunocontraception.
|
84 |
coronavirus
(8 times)
|
Veterinary Medicine (3 times)
|
RV (2 times) ALRI (1 time) AV (1 time)
|
1982 Colostral and milk antibody titers in cows vaccinated with a modified live-rotavirus-coronavirus vaccine.
|
85 |
candida vaginitis
(7 times)
|
Nursing (3 times)
|
BV (4 times) AV (2 times) AVF (2 times)
|
1991 Predicting the occurrence of antibiotic-induced candidal vaginitis (AICV).
|
86 |
canonical variate
(7 times)
|
Microbiology (1 time)
|
PC (4 times) AF (1 time) AIS (1 time)
|
1995 Sporadic isolates of Escherichia coli O157.H7 investigated by pyrolysis mass spectrometry.
|
87 |
cardinal vein
(7 times)
|
Physiology (2 times)
|
DA (2 times) ECs (2 times) LECs (2 times)
|
1991 Cardiovascular effects of endothelin in trout.
|
88 |
Cervical vertigo
(7 times)
|
Complementary Therapies (3 times)
|
RCTs (4 times) CI (1 time) CMT (1 time)
|
2007 Cervical vertigo--cervical pain: an alternative and efficient treatment.
|
89 |
cold vapor
(7 times)
|
Chemistry Techniques, Analytical (6 times)
|
FI (3 times) ICP-MS (2 times) OES (2 times)
|
2002 Mercury speciation by HPLC--cold-vapour radiofrequency glow-discharge optical-emission spectrometry with on-line microwave oxidation.
|
90 |
controlled vocabulary
(7 times)
|
Biochemistry (3 times)
|
cNRSs (2 times) GOLD (2 times) IMG (2 times)
|
2006 Limited search strategies were effective in finding relevant nonrandomized studies.
|
91 |
convective volume
(7 times)
|
Nephrology (4 times)
|
OL-HDF (5 times) HD (2 times) ICW (2 times)
|
2005 Validity of preoperative volumetric analysis of congestion volume in living donor liver transplantation using three-dimensional computed tomography.
|
92 |
Cornell voltage
(7 times)
|
Cardiology (4 times)
|
LVH (6 times) SL (4 times) CP (3 times)
|
2007 Evaluation of hypertensive cardiac abnormalities using the Cornell product.
|
93 |
cortical vesicle
(7 times)
|
Cell Biology (3 times)
|
IA (2 times) NEM (1 time) VAMP (1 time)
|
1984 Modulation of calcium sensitivity by a specific cortical protein during sea urchin egg cortical vesicle exocytosis.
|
94 |
costovertebral
(7 times)
|
Rheumatology (3 times)
|
CT (3 times) ANT (1 time) AS (1 time)
|
1978 Costovertebral and costotransverse joint involvement in rheumatoid arthritis.
|
95 |
crude venom
(7 times)
|
Animals, Poisonous (2 times)
|
HIV (2 times) ANXA1 (1 time) AP-PLA2 (1 time)
|
2003 Neutralization of some hematological and hemostatic alterations induced by neuwiedase, a metalloproteinase isolated from Bothrops neuwiedi pauloensis snake venom, by the aqueous extract from Casearia mariquitensis (Flacourtiaceae).
|
96 |
cubital vein
(7 times)
|
Urology (5 times)
|
ISV (4 times) PRA (3 times) AF (1 time)
|
1988 Induction of renin-angiotensin system in human testis in vivo.
|
97 |
CV 205-502
(7 times)
|
Endocrinology (5 times)
|
AUC (2 times) Br (1 time) DEX (1 time)
|
1988 Endocrine effects of CV 205-502, a new dopamine agonist, in hyperprolactinemic women.
|
98 |
calorific value
(6 times)
|
Environmental Health (6 times)
|
MSW (2 times) SRF (2 times) WAS (2 times)
|
2007 Wastes as co-fuels: the policy framework for solid recovered fuel (SRF) in Europe, with UK implications.
|
99 |
cardiovascular conditions
(6 times)
|
Diagnostic Imaging (1 time)
|
SA (2 times) CA (1 time) CKD (1 time)
|
1988 Southern African cardiomyopathy in the Republic of South Africa, 1978-1980.
|
100 |
cervical vertebrae
(6 times)
|
Dentistry (4 times)
|
3D-CBCT (1 time) CDU (1 time) CVM (1 time)
|
1999 Colour Doppler ultrasonography of retropharyngeal abscess.
|