Fedrizal F.F., Department of Internal Medicine, Faculty of Medicine, Dr. Cipto Mangunkusumo Hospital, Universitas Indonesia, Jakarta, Indonesia; Wijaya I.P., Division of Cardiology, Department of Internal Medicine, Faculty of Medicine, Dr. Cipto Mangunkusumo Hospital, Universitas Indonesia, Jakarta, Indonesia; Abdullah M., Unit Epidemiology, Department of Internal Medicine, Faculty of Medicine, Dr. Cipto Mangunkusumo Hospital, Universitas Indonesia, Jakarta, Indonesia; Yamin M., Division of Cardiology, Department of Internal Medicine, Faculty of Medicine, Dr. Cipto Mangunkusumo Hospital, Universitas Indonesia, Jakarta, Indonesia