1. Department of Medicine, University of the Philippines-Philippine General Hospital, Manila, Philippines
2. College of Medicine, University of the Philippines Manila, Manila, Philippines
3. Department of Medicine, Southern Philippines Medical Center, Davao City, Philippines
4. Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of the Philippines - Philippine General Hospital, Manila, Philippines
5. Department of Cardiology, Rush University Medical Center, Chicago, IL, USA