Postural circulatory changes at rest and during exercise in five patients with congenital absence of valves in the deep veins of the legs.
D001775:Blood Circulation; D002320:Cardiovascular Physiological Phenomena; D015444:Exercise; D006801:Humans; D007866:Leg; D012146:Rest; D014680:Veins / Q000002:abnormalities*
BLOOD CIRCULATION; VEINS/abnormalities