Honorary Senior Research Professor (Clinical Research), Institute of Liver & Biliary Sciences, New Delhi, India & Professor (GRIPMER), The Ganga Ram Institute for Postgraduate Medical Education & Research, Sir Ganga Ram Hospital, New Delhi. He was Director General, Indian Council of Medical Research, New Delhi, President JIPMER, Puducherry, and was acting Director, Post Graduate Institute of Medical Education & Research, Chandigarh.