Hubungan jumlah pasangan seks anal dengan kejadian proktitis gonore dan/atau proktitis klamidia pada lelaki seks lelaki di Jakarta, Bandung, dan Surabaya : analisis data sekunder surveilans terpadu biologis dan perilaku tahun 2011 = Correlation of anal sex partner number and gonorrhea proctitis and or chlamydia proctitis in men who have sex with men (MSM) in Jakarta, Bandung, and Surabaya 2011 secondary data : analysis of biological and behaviour integrated surveillance 2011