Availability and Quality of Surveillance and Survey Data on HIV Prevalence Among Sex Workers, Men Who Have Sex With Men, People Who Inject Drugs, and Transgender Women in Low- and Middle-Income Countries: Review of Available Data (2001-2017)

Sonia Arias Garcia   ^{1 *} , MSc ;   Jia Chen   ^{2 *} , MSc ;   Jesus Garcia Calleja   ³ , MD ;   Keith Sabin   ¹ , PhD ;   Chinelo Ogbuanu   ⁴ , MD, PhD ;   David Lowrance   ³ , MD ;   Jinkou Zhao   ^{4, 5, 6} , MSc, PhD, MD

¹ Joint United Nations Programme on HIV/AIDS, Geneva, Switzerland

² School of Public Health, Xiamen University, Xiamen, China

³ World Health Organization, Geneva, Switzerland

⁴ The Global Fund to Fight AIDS, Tuberculosis and Malaria, Grand-Saconnex, Geneva, Switzerland

⁵ Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, China

⁶ Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China

*these authors contributed equally