1. Department of Internal Medicine; IPGMER; Kolkata India
2. Department of Internal Medicine; St Vincent Charity; Cleveland OH USA
3. Department of Internal Medicine; University of Nebraska Medical Center; Omaha NE USA
4. Department of Internal Medicine; St Vincent Charity Medical Center, A teaching affiliate to; Case Western Reserve University; Cleveland OH USA
5. Department of Cardiology; Apollo Gleneagles Hospital; Kolkata India
6. Department of Internal Medicine; NMB Centre; Serampore West Bengal India