title: A clinical study of foreign bodies in air passages.
mesh_terms: D001980:Bronchi; D002648:Child; D002675:Child, Preschool; D003951:Diagnostic Errors; D005260:Female; D005547:Foreign Bodies / Q000150:complications / Q000175:diagnosis*; D006801:Humans; D007223:Infant; D007830:Larynx; D008297:Male; D012137:Respiratory System; D012141:Respiratory Tract Infections / Q000175:diagnosis; D014132:Trachea