Robert Ruby Stella, Gnanavel Sundar
Department of Physiology and Cardiopulmonary Rehabilitation, Vallabhbhai Patel Chest Institute, New Delhi, India.
Department of Psychiatry, AIIMS, New Delhi, India.
Indian J Psychol Med. 2015 Apr-Jun;37(2):248-9. doi: 10.4103/0253-7176.155678.