The chair and venous thrombosis.
D001778:Blood Coagulation Disorders / Q000150:complications; D001808:Blood Vessels / Q000293:injuries; D002681:China; D004487:Edema / Q000209:etiology; D005060:Europe; D006112:Gravitation; D049668:History, 15th Century; D049669:History, 16th Century; D049670:History, 17th Century; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D049690:History, Ancient; D049691:History, Medieval; D006801:Humans; D007866:Leg / Q000098:blood supply; D008512:Medicine in the Arts; D012039:Regional Blood Flow; D013924:Thrombophlebitis / Q000150:complications / Q000453:epidemiology / Q000209:etiology* / Q000266:history; D014689:Venous Insufficiency / Q000150:complications / Q000209:etiology