Duttagupta C, Bhattacharyya D, Narayanan P, Pattanshetty S M
Department of Public Health, Manipal University, Manipal, Karnataka, India.
Department of Applied Health Research, University of Birmingham, Birmingham, UK.
Public Health. 2017 Jul;148:63-65. doi: 10.1016/j.puhe.2017.02.020. Epub 2017 Apr 9.