1755272 VPV visually perceived vertical 5 1755278 VPV velopharyngeal valve 4 1755276 VPV ventilatory pattern variability 4 1755275 VPV valine-proline-valine 1 1755274 VPV variable pressure valve 1 1755273 VPV vein peak velocity 1 1755279 VPV velocity of portal vein 1 1755265 VPV Velopharynx volume 1 1755277 VPV ventilation-induced plethysmographic variation 1 1755281 VPV vertical photovoltaic 1 1755280 VPV vertical-visually perceived vertical 1 1755266 VPV vestibular peripheral vertigo 1 1755264 VPV Village Polio Volunteers 1 1755270 VPV vinyl pivalate 1 1755269 VPV virtual perfusion volume 1 1755268 VPV visual perception of the orientation perceived as vertical 1 1755267 VPV visual preference vote 1 1755271 VPV voltage-polarized vesicles 1