1. Associate Professor, School of Public Health and Community Medicine, BP Koirala Institute of Health Sciences, Dharan, Nepal. Correspondence:
2. Consultant, Mother and Infant Research Activities (MIRA), Kathmandu, Nepal
3. Associate Professor, Nossal Institute for Global Health, University of Melbourne, Melbourne, Australia
4. Research Officer, Mother and Infant Research Activities (MIRA), Kathmandu, Nepal
5. Field Manager, Mother and Infant Research Activities (MIRA), Kathmandu, Nepal
6. Executive Director, Mother and Infant Research Activities (MIRA), Kathmandu, Nepal