1. a Department of Public Health, Hamdard University Bangladesh, Hamdard City of Science, Education & Culture, Gazaria, Munshiganj 1510, Bangladesh
2. b International Centre for Research, Innovation, Training and Development, Dhaka, Bangladesh
3. c Department of Public Health and Informatics, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh
4. d Department of Statistics, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh
5. e Department of Biochemistry and Molecular Biology, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh
6. f Department of Child Health, and the Child Health Research Institute, University of Missouri School of Medicine, Columbia, MO 65201, USA
7. g Evidence and Learning Department, Save the Children, Cox's Bazar Area Office, Cox's Bazar, Bangladesh
8. h WaterAid Bangladesh, Banani, Dhaka 1213, Bangladesh