Lei Han

HIV Risk Behaviors Among Male-to-Female Transgender Persons of Color in San Francisco

Tooru Nemoto, Don Operario, JoAnne Keatley et al. · American Journal of Public Health · 2004 · 303 citations · Full text

High Levels of Unprotected Sex With Men and Women among Men Who Have Sex With Men: A Potential Bridge of HIV Transmission in Beijing, China

Kyung–Hee Choi, David R. Gibson, Lei Han et al. · AIDS Education and Prevention · 2004 · 166 citations

Emerging HIV-1 epidemic in China in men who have sex with men

Kyung–Hee Choi, Hui Liu, Yaqi Guo et al. · The Lancet · 2003 · 144 citations

Sexual Health, Commercial Sex, Treatment And Prevention +8

Lack of HIV Testing and Awareness of HIV Infection Among Men Who Have Sex With Men, Beijing, China

Kyung–Hee Choi, Hui Lui, Yaqi Guo et al. · AIDS Education and Prevention · 2006 · 111 citations

Effects of resistance spot welding parameters on microstructures and mechanical properties of dissimilar material joints of galvanised high strength steel and aluminium alloy

Wenda Zhang, Xiaoming Qiu, Da Sun et al. · Science and Technology of Welding & Joining · 2011 · 93 citations

Friction Welding, Engineering, Welding Time +17