General anesthesia:  the agents in use.
D000758:Anesthesia; D000768:Anesthesia, General; D000769:Anesthesia, Inhalation; D000771:Anesthesia, Intravenous; D001463:Barbiturates; D006801:Humans
D001463:Barbiturates
ANESTHESIA, INHALATION; ANESTHESIA, INTRAVENOUS; BARBITURATES