[Studies on the critical evaluation of tracheotomy].
D000293:Adolescent; D000328:Adult; D000368:Aged; D000818:Animals; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008441:Maxillary Neoplasms / Q000601:surgery*; D008875:Middle Aged; D011182:Postoperative Care; D011817:Rabbits; D012140:Respiratory Tract Diseases / Q000601:surgery*; D014140:Tracheotomy