title: On ethics in human experimentation.
mesh_terms: D000771:Anesthesia, Intravenous; D001463:Barbiturates; D002585:Cesarean Section; D002986:Clinical Trials as Topic; D004992:Ethics, Medical; D006805:Human Experimentation; D006801:Humans; D009609:Nitrous Oxide; D010100:Oxygen; D013438:Sulfhydryl Compounds
chemical_list: D001463:Barbiturates; D013438:Sulfhydryl Compounds; D009609:Nitrous Oxide; D010100:Oxygen