1. Department of Cardiology and Vascular Medicine, Faculty of Medicine, Universitas Indonesia, National Cardiovascular Center Harapan Kita, Jakarta, Indonesia.
2. Division Heart and Lungs, Department of Cardiology, University Medical Center Utrecht, Utrecht, The Netherlands.
3. Faculty of Medicine, Universitas YARSI, Jakarta, Indonesia.
4. Central Military Hospital, Utrecht, The Netherlands.
5. Netherlands Heart Institute, Utrecht, The Netherlands.