Prophylactic penicillin and postoperative chest infections.
D001991:Bronchitis; D001996:Bronchopneumonia; D006801:Humans; D010406:Penicillins; D011014:Pneumonia; D011018:Pneumonia, Pneumococcal; D012141:Respiratory Tract Infections; D013514:Surgical Procedures, Operative
D010406:Penicillins
BRONCHITIS; BRONCHOPNEUMONIA; PNEUMONIA, LOBAR; SURGERY, OPERATIVE