1. Department of General Medicine, Upendra Medicare, Varanasi, Uttar Pradesh, India
2. Department of Medicine, Vatsalya Hospital Multi Speciality Center, Varanasi, Uttar Pradesh, India
3. College of Osteopathic Medicine, Nova Southeastern University, Ft. Lauderdale, Florida, USA
4. Department of General Medicine, Aditya Multi Speciality Hospital, Guntur, Andhra Pradesh, India