Chlorine:  its products and uses.
D000698:Analgesia; D000758:Anesthesia; D000760:Anesthesia and Analgesia; D000776:Anesthesiology; D002713:Chlorine; D059408:Pain Management; D014241:Trichloroethylene
D014241:Trichloroethylene; D002713:Chlorine
CHLORINE; TRICHLOROETHYLENE/anesthesia and analgesia