1 Assistant Professor, All India Institute of Medical Sciences, Uttarakhand, India.
2 MPH Student, School of Public Health, Department of Community and Family Medicine, All India Institute of Medical Sciences Rishikesh, Uttarakhand, India.
3 Associate Professor, All India Institute of Medical Sciences, Uttarakhand, India.
4 Professor and Head, Department of Community and Family Medicine, All India Institute of Medical Sciences, Uttarakhand, India.