1. Department of Social Work, Chinese University of Hong Kong, Shatin, HONG KONG
2. Department of Social and Behavioral Sciences, College of Liberal Art and Social Sciences, City University of Hong Kong, Kowloon, HONG KONG
3. School of Nursing and Health, Zhengzhou University, Zhengzhou, CHINA
4. Nursing and Midwifery Training College, Twifo Praso, Central Region, GHANA
5. School of International Education, Southern Medical University, Guangzhou, CHINA
6. Department of Demography, College for Health, Community and Policy, The University of Texas, San Antonio, TX, USA