Mysteries of rhubarb: Chinese medicinal rhubarb through the ages.
D002681:China; D005060:Europe; D049690:History, Ancient; D049691:History, Medieval; D049711:History, Modern 1601-; D006801:Humans; D010600:Pharmacology / Q000266:history; D010946:Plants, Medicinal; D012250:Rheum / Q000266:history*