1. Dept. of Psychiatry, T.N.M.C. & B.Y.L. Nair Charitable Hospital, Mumbai, Maharashtra, India.
2. PGIMS, Rohtak, Haryana, India.
3. Dept. of Psychiatry & Drug De-addiction Centre, Lady Hardinge Medical College, New Delhi, India.
4. Dr Thomas John Clinic, Ernakulam, Kochi, Kerala, India.