A Senior Consultant at the department of Pulmonology and Respiratory Medicine in Fortis Hospital, Dr. (Col) R S Chatterji has over 3 decades of rich experience in his field. In addition to other achievements, Dr. (Col) R S Chatterji has presented papers on HIV AIDS in both national and international conferences and has contributed to many publications. Dr. (Col) R S Chatterji’s area of expertise lies in critical care, bronchoscopy, other pulmonary procedures, sleep studies and looking after all other aspects of management of respiratory and internal medicine cases.