1. Department of Medicine, Narayana Medical College, Nellore, Andhra Pradesh, India
2. Department of Medicine, King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
3. Department of Medicine, NRI Medical College (NRIAS), Guntur, Andhra Pradesh, India
4. JSS Medical College, Mysore, Karnataka, India
5. Department of Hematology and Medical Oncology, Emory University, Atlanta, USA