1. School of Public Health, Taipei Medical University, No. 250, Wu-Hsing St, Taipei City, Taiwan
2. School of International Education, Southern Medical University, No. 1023, South Shatai Road, Baiyun, Guangzhou, Guangdong, P.R. China
3. Roi Et Hospital, 111 Ronnachaicharnyut Soi 13, Tambon Nai Mueang, Amphoe Mueang Roi Et, Roi Et Province, Thailand
4. Medical Laboratory Science and Biotechnology College of Health Sciences, Kaohsiung Medical University, No. 100, Shiquan 1st Road, Kaohsiung City, Sanmin District, Taiwan
5. Research Department, Ministry of Health, Mbabane, Swaziland
6. Training and Research Unit of Excellence (TRUE), Public Health Department, College of Medicine, University of Malawi, Private Bag 360, Chichiri, Blantyre, Malawi