Tracheotomy 124 B.C. to 1960 A.D.
D001237:Asphyxia / Q000517:prevention & control*; D035843:Biomedical Research; D006801:Humans; D008910:Minnesota; D014132:Trachea / Q000601:surgery*; D014140:Tracheotomy
ASPHYXIA/prevention and control; TRACHEA/surgery