[Facing the chances and setbacks].
Qin
B Y
BY
D002681:China; D002800:Cholinesterase Inhibitors / Q000266:history; D005048:Etorphine / Q000031:analogs & derivatives / Q000266:history; D049673:History, 20th Century; D014116:Toxicology / Q000266:history*
D002800:Cholinesterase Inhibitors; D005048:Etorphine