1. Institute of Social and Medical Studies, Ha Noi, Vietnam
2. Tay Ho Clinics, Ha Noi, Vietnam
3. Khanh Hoa Provincial Health Services, Nha Trang, Vietnam
4. The International Rescue Committee, Public Health Advocacy, Silver Spring, MD 20910, USA
5. School of Nursing, Office of Global Health, University of Maryland Baltimore, Baltimore, MD 21201, USA
6. FHI 360, Health Service Research, Durham, NC 27713, USA
7. Pediatric Prevention Research Center, The Carman and Ann Adams Department of Pediatrics, Wayne State University, Detroit, MI 43201, USA