title: Letter: Prophylactic treatment of postgonococcal urethritis.
mesh_terms: D006069:Gonorrhea / Q000150:complications*; D006801:Humans; D008297:Male; D010402:Penicillin G Procaine / Q000627:therapeutic use*; D013754:Tetracyclines / Q000627:therapeutic use*; D014526:Urethritis / Q000517:prevention & control*
chemical_list: D013754:Tetracyclines; D010402:Penicillin G Procaine