1 Department of Emergency and Critical Care Medicine, Sri Gokulam Hospitals and Research Institute, Salem, Tamil Nadu, India.
2 Department of Pathology, Forensic Medicine Division, College of Medicine, King Fahd Hospital of the University, University of Dammam, Dammam, Saudi Arabia.
3 Department of Emergency Medicine, Hamad General Hospital, Doha, Qatar.
4 Department of Internal Medicine, Chennai Medical College and Research Center, Irungalur, Trichy, Tamil Nadu, India.