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        Consultant Internal Medicine & Critical Care,
                
 P. D. Hinduja Hospital & Medical Research Centre. 
        Critical Care Specialist,
              
 Vice Chairman, Critical Care - Sir Ganga Ram Hospital, New Delhi. 
        ENT Specialist, Mbagathi Hospital.
              
Infectious Diseases Fellowship (P. D. Hinduja National Hospital, Mumbai).
              
Consultant Infectious Diseases, Medanta - The Medicity, Gurugram.
              
Fortis Memorial Research Institute (FMRI), Gurugram.