1. HIV Program (HIV Prevention), Eswatini Ministry of Health , Mbabane H100 , Eswatini
2. Public Health Surveillance and Emergency Response Department of Vallès Occidental and Vallès Oriental, Public Health Agency of Catalonia, Sant Cugat del Vallès , Barcelona 08173 , Spain
3. Institute of Health and Welfare Policy, College of Medicine, National Yang Ming Chiao Tung University , Taipei 112, Taiwan , ROC
4. Institute of Public Health, College of Medicine, National Yang Ming Chiao Tung University , Taipei 112, Taiwan , ROC