Ravi Prakash Upadhyay1, Palanivel C2 and Vaman Kulkarni3
1MBBS, MD. Centre for Community Medicine, All India Institute of Medical Sciences, New Delhi, India
2MBBS, MD, Assistant Professor, Department of Community Medicine, Indira Gandhi Medical College and Research Institute, Puducherry, India
3MBBS, MD. Assistant Professor, Department of Community Medicine, Kasturba Medical College, Mangalore, India