Article Title,Year,Volume,Issue,Page Range,Author Accidents caused by gas at a constant pressure,1970,20,4,563-569,Spiegel Prevention of accidents. Fires and explosions in the operating room,1969,19,2,164-173,Spiegel Emergency care during public catastrophies. Participation and responsability of the anesthesiologist,1969,17,4,482-493,Brandão Psychotomimetic effects of ketamine,1971,21,4,820-831,Sanchez