1. Department of Internal Medicine, Lady Hardinge Medical College, New Delhi, India
2. Armed Forces Medical College, Pune, Maharashtra, India
3. Department of Internal Medicine, Dayanand Medical College and Hospital, Ludhiana, Punjab, India
4. Department of Internal Medicine, Cleveland Clinic Akron General, Akron, Ohio, USA
5. Department of Internal Medicine, Penn State Milton S. Hershey Medical Center, Hershey, Pennsylvania, USA