1. Department of Cardiology & Vascular Medicine, Mohammad Hoesin General Hospital, Palembang, South Sumatra, Indonesia
2. Faculty of Medicine, Muhammadiyah Palembang University, Palembang, South Sumatra, Indonesia
3. Cardiovascular Medicine Resident, Faculty of Medicine, University of Indonesia, Jakarta Indonesia
4. Faculty of Medicine, Sriwijaya University, Palembang, South Sumatra, Indonesia