1. University of the Philippines,College of Medicine; Department of Clinical Epidemiology; 547 Pedro Gil St Ermita 1000 Manila Philippines
2. Department of Medicine, Philippine General Hospital, University of the Philippines; Department of Clinical Epidemiology and Section of Infectious Diseases; Manila Philippines 1000
3. University of the Philippines Manila College of Medicine-Philippine General Hospital; Department of Pediatrics; Taft Avenue Manila National Capital Region Philippines 1000
4. University of the Philippines; Section of Newborn Medicine, Department of Pediatrics; Philippine General Hospital Taft Ave Manila Philippines 1000