title: Cases 1, 2, and 3.
mesh_terms: D000293:Adolescent; D000667:Ampicillin / Q000627:therapeutic use; D000900:Anti-Bacterial Agents / Q000627:therapeutic use*; D004917:Erythromycin / Q000627:therapeutic use; D005626:Frontal Sinus; D006801:Humans; D008297:Male; D008875:Middle Aged; D009175:Mycoplasma Infections / Q000188:drug therapy*; D011018:Pneumonia, Pneumococcal / Q000188:drug therapy*; D012852:Sinusitis / Q000188:drug therapy*
chemical_list: D000900:Anti-Bacterial Agents; D004917:Erythromycin; D000667:Ampicillin