Dr. (Col) R S Chatterji joined our Department of Pulmonology & Sleep Medicine and Department of Internal Medicine as a Senior Consultant. He has 43 years of clinical experience. He is a graduate of AFMC, Pune and further did MD (Medicine), MD (Respiratory Medicine) and DNB (Respiratory Medicine). He has worked and taught in many tertiary care centers in Army including AFMC Pune and RR hospital Delhi. Last 12 years he was with Fortis Escorts and Vasant Kunj. He is a recognized teacher and has guided numerous Internal Medicine and Respiratory Medicine (DNB) candidates and isa DNB examiner. His daily work includes Critical Care, Bronchoscopy, other Pulmonary Procedures, Sleep Studies and looking after all other aspects of Management of Respiratory and Internal Medicine Cases. Papersand Publications: He has undertaken 2 Research Projects in relationto HIVAIDS, presented many papers in Nationaland International conferences. He has many publications to his credit including4cha pters in reputed medicaltext books.