3632248 VPDs vaccine-preventable diseases 259 3632254 VPDs ventricular premature depolarizations 49 3632256 VPDs vapor pressure deficits 9 3632245 VPDs vaccine-preventable infectious diseases 7 3632246 VPDs vacuum photodiodes 1 3632249 VPDs vaginal penetration difficulties 1 3632257 VPDs variable packet dropouts 1 3632253 VPDs vascular surgery program directors 1 3632242 VPDs Vascular-penetration defects 1 3632243 VPDs Vegetable protein diets 1 3632244 VPDs Vertical patellar dislocations 1 3632255 VPDs viologen-phosphorus dendrimers 1 3632250 VPDs Visible-light photodetectors 1 3632251 VPDs visual-perceptual disturbances 1 3632252 VPDs volume probability distributions 1 3632247 VPDs Vulvar pain disorders 1