Adult, Anti-Bacterial Agents, Azithromycin, Ceftriaxone, Ciprofloxacin, Doxycycline, Drug Resistance, Bacterial, Female, Gonorrhea, Heterosexuality, Homosexuality, Humans, Logistic Models, Male, Microbial Sensitivity Tests, Neisseria gonorrhoeae, Penicillins, Sensitivity and Specificity, Sentinel Surveillance, Tetracycline