1. International Health Program, Yang-Ming Campus, National Yang Ming Chiao Tung University, Taipei City 112304, Taiwan
2. Faculty of Health Sciences, Sanaag University, Erigavo, Somaliland
3. Institute of Public Health, Yang-Ming Campus, National Yang Ming Chiao Tung University, Taipei City 112304, Taiwan
4. Institute of Community Health Care, College of Nursing, Yang-Ming Campus, National Yang Ming Chiao Tung University, Taipei City 112304, Taiwan