K K Sahu1, A A Sherif1, M P Syed1, A Rajendran2, A K Mishra1, R Davaro3. 1. Department of Internal Medicine, Saint Vincent Hospital, Worcester, MA, USA. 2. Department of Cardiovascular Diseases, Mayo Clinic, Rochester, MN USA. 3. Department of Infectious diseases, Saint Vincent Hospital, Worcester, MA, USA.