1. Department of Clinical Epidemiology, College of Medicine, University of the Philippines Manila, Manila 1000, Philippines
2. Department of Neurosciences, College of Medicine and Philippine General Hospital, University of the Philippines Manila, Manila 1000, Philippines
3. Division of Neurology and Department of Psychiatry, University of Toronto, Toronto, ON M5S, Canada
4. Department of Obstetrics and Gynecology, College of Medicine and Philippine General Hospital, University of the Philippines Manila, Manila 1000, Philippines
5. Department of Obstetrics and Gynecology, Manila Doctors Hospital, Manila 1000, Philippines
6. Department of Obstetrics and Gynecology, Medical Center Manila, Manila 1000, Philippines
7. Department of Physiology, College of Medicine, University of the Philippines Manila, Manila 1000, Philippines
8. Department of Biology, College of Science, De La Salle University, Manila 1004, Philippines
9. Department of Epidemiology and Biostatistics, College of Public Health, University of the Philippines Manila, Manila 1000, Philippines
10. Institute for Neurosciences, St. Luke’s Medical Center, Quezon City 1112, Philippines