title: The role of medicine.
mesh_terms: D004739:England; D006801:Humans; D008297:Male; D008875:Middle Aged; D011018:Pneumonia, Pneumococcal / Q000188:drug therapy / Q000401:mortality*; D013449:Sulfonamides / Q000627:therapeutic use; D014852:Wales
chemical_list: D013449:Sulfonamides