Dedication Page.- Acknowledgements: Dudley L. Poston, Jr. and Joseph D. Tucker.- Preface: Richard E. Ewing.- Introduction: Joseph D. Tucker and Dudley L. Poston, Jr.- Chinese Population Dynamics and HIV/STD Risk.- 1. Uncertain Population Dynamics and HIV/AIDS in China: Qiang Ren, Xiaoying Zheng, Wolfgang Lutz, and Sergei Scherbov.- 2. Migration and Gender in China's HIV/AIDS Epidemic: Giovanna Merli, Jack DeWaard, Feng Tian and Sara Hertog.- China's Surplus Males and HIV/STD.- 3. China's Unbalanced Sex Ratio at Birth: How Many Surplus Boys Have Been Born Since the 1980s?: Dudley L. Poston and Li Zhang.- 4. Bare Branches, Prostitution, and HIV in China: A Demographic Analysis.- Avraham Y. Ebenstein and Ethan Jennings.- HIV/STD Risk in China for Males and Females.- 5. Gender, Migration, and Unprotected Casual and Commercial Sex: Individual and Social Determinants of HIV/STD Risk Among Female Migrants: Xiushi Yang and Guomei Xia.- 6. Heterosexual Male STI/HIV Risk in China: Joseph Tucker and Tianfu Wang.- 7. HIV/AIDS Structural Interventions in China: Concept, Context and Opportunities: Yan Hong.- 8. Patterns of Sexually Transmitted Infections in China: Ginny Garcia, Rachel Traut Cortes, and Dudley L. Poston, Jr.- Commercial Sex Worker Policies and the Law.- 9. The 'Risk Environment' For Commercial Sex Work In China: Considering the Role of Law and Law Enforcement Practices: Scott Burris and Guomei Xia.- 10. Administrative Detention of Prostitutes: The Legal Aspects: Hualing Fu and D. W. Choy.- 11. Decriminalizing Sex Work: Implications for HIV Prevention and Control in China: Dongbao Yu, Edmund Settle, Ruotao Wang, and Lenore Manderson: Indexes.- About the Editors and Authors