1. Section of Neurosurgery, Department of Surgery, Jose R. Reyes Memorial Medical Center, Manila;
2. Health Sciences Program, School of Science and Engineering, Loyola Schools, Ateneo de Manila University, Quezon City;
3. Department of Economics, Finance and Accounting, Graduate School of Business, Professional Schools, Ateneo de Manila University, Makati; and
4. Division of Neurosurgery, Department of Neurosciences, University of the Philippines–Philippine General Hospital, University of the Philippines College of Medicine, Manila, Philippines