title: Pneumonia.
mesh_terms: D000284:Administration, Oral; D000328:Adult; D003023:Cloxacillin / Q000627:therapeutic use; D003289:Convalescence; D004917:Erythromycin / Q000627:therapeutic use; D006801:Humans; D007273:Injections, Intramuscular; D008297:Male; D008875:Middle Aged; D010400:Penicillin G / Q000627:therapeutic use; D010406:Penicillins / Q000008:administration & dosage; D011014:Pneumonia / Q000188:drug therapy*; D011018:Pneumonia, Pneumococcal / Q000175:diagnosis / Q000188:drug therapy / Q000209:etiology; D012907:Smoking; D013210:Staphylococcus / Q000472:pathogenicity; D013296:Streptococcus pneumoniae / Q000472:pathogenicity
chemical_list: D010406:Penicillins; D004917:Erythromycin; D003023:Cloxacillin; D010400:Penicillin G