STD control in less developed countries: the time is now.
D006293:Health Promotion; D006801:Humans; D009344:Neisseria gonorrhoeae / Q000187:drug effects; D010403:Penicillin Resistance; D010406:Penicillins / Q000627:therapeutic use; D012725:Sexual Behavior; D012749:Sexually Transmitted Diseases / Q000150:complications / Q000175:diagnosis / Q000188:drug therapy / Q000191:economics / Q000453:epidemiology* / Q000517:prevention & control; D012922:Social Change
D010406:Penicillins