1. Department of Public Health, University Training Center for Health Care Professionals, 520 Nguyen Tri Phuong, Q. 10, Ho Chi Minh City, Vietnam
2. Department of Public Health, University Training Center for Health Care Professionals, 520 Nguyen Tri Phuong, Q. 10, Ho Chi Minh City, Vietnam, Key Centre for Women's Health, University of Melbourne, Australia
3. School of Public Health, Henri Poincaré University, Nancy, France