Prof. Chhabra is Former Director-Professor, Vallabhbhai Patel Chest Institute, Delhi, an internationally acclaimed and well-known Institution for chest diseases. He was associated with the Institute for more than three decades after obtaining his postgraduate qualification from the same Institute. A physician of great repute and a highly respected teacher, Dr. Chhabra has been active in several areas of research, both basic and applied, in the discipline of Pulmonary Medicine and allied sciences.