1. Department of Community Medicine, Tagore Medical College and Hospital, Chennai, India.
2. Department of Psychiatry, Sri Muthukumaran Medical College Hospital and Research Institute, Chennai, India.
3. Department of Paediatrics, Sri Muthukumaran Medical College Hospital and Research Institute, Chennai, India.
4. Department of Psychiatry, Melmaruvathur Adhiparasakthi Institute of Medical Sciences & Research, Melmaruvathur, India.