1. Department of General Medicine, Dr. NTR University of Health Sciences, Vijayawada, Andhra Pradesh, India
2. Department of Medicine, Kakatiya Medical College, Warangal, Telangana, India
3. Department of General Surgery, Konaseema Institute of Medical Sciences and Research Foundation, Amalapuram, Andhra Pradesh, India
4. Department of General Medicine, Rangaraya Medical College, Kakinada, Andhra Pradesh, India