1. Brawijaya University, Department of Biomedical Nursing, Faculty of Medicine, Malang, Indonesia
2. Master Program of Biomedical, Faculty of Medicine, Brawijaya University, Malang, Indonesia
3. Bachelor Programme, Faculty of Medicine, Brawijaya University, Malang, Indonesia
4. Department of Internal Medicine, Faculty of Medicine, University of Muhammadiyah, Malang, Indonesia
5. Department of Cardiology, Faculty of Medicine, Syiah Kuala University, Aceh, Indonesia, Phone: (+62)8116618282, Fax: (0651)43878