HIV Testing Patterns and Unrecognized HIV Infection among Young Asian and Pacific Islander Men Who Have Sex with Men in San Francisco - Do, Tri D.; Chen, Sanny; McFarland, Willi; Secura, Gina M.; Behel, Stephanie K.; MacKellar, Duncan A.; Valleroy, Linda A.; Cho, Kyung-Hee (AIDS Education and Prevention, 2005)