1. Department of Medicine; Philippine General Hospital, University of the Philippines Manila; Philippines
2. Department of Otorhinolaryngology - Head and Neck Surgery; College of Medicine, De La Salle Health Sciences Institute; Philippines
3. Asia-Pacific Center for Evidence-Based Healthcare; Manila Philippines
4. Asia-Pacific Center for Evidence-Based Healthcare; Kalusugan ng Mag-Ina (Health of Mother and Child), Inc.; Philippines