[1] Univ Malaya, Dept Med, Div Cardiol, Med Ctr, Kuala Lumpur, Malaysia
[2] Natl Heart Inst Malaysia, Cardiol Dept, Kuala Lumpur, Malaysia
[3] Serdang Hosp, Cardiol Dept, Sepang, Selangor, Malaysia
[4] Cardiac Vasc Sentral Kuala Lumpur, Cardiol Dept, Kuala Lumpur, Malaysia
[5] Queen Elizabeth Hosp II, Cardiol Dept, Sabah, Malaysia
[6] Univ Malaya, Dept Med, Med Ctr, Kuala Lumpur, Malaysia
[7] Gleneagles Hosp Penang, Cardiol Dept, George Town, Malaysia
[8] Kuala Lumpur Hosp, Med Dept, Kuala Lumpur, Malaysia
[9] Sarawak Heart Ctr, Cardiol Dept, Sarawak, Malaysia
[10] Novartis Corp Malaysia Sdn Bhd, Petaling Jaya, Selangor, Malaysia
[11] Univ Malaya, Med Ctr, Jalan Prof Diraja Ungku Aziz, Kuala Lumpur 59100, Malaysia