1. Department of Community Medicine, RBBSU, Swami Rama Himalayan Institute, Dehradun, Uttarakhand, India
2. Department of Community Medicine, Himalayan Institute of Medical Sciences, Swami Rama Himalayan Institute, Dehradun, Uttarakhand, India
3. Department of Obstetrics and Gynaecology, Himalayan Institute of Medical Sciences, Swami Rama Himalayan Institute, Dehradun, Uttarakhand, India