1 Department of Radiation Oncology, University of Santo Tomas Hospital - Benavides Cancer Institute, Manila, Philippines
2 Department of Emergency Medicine, University of Texas M.D. Anderson Cancer Center, Houston, Texas, USA
3 Pain Management and Palliative Care Unit, University of Santo Tomas Hospital - Benavides Cancer Institute, Manila, Philippines
4 Center for Pain Medicine, University of Santo Tomas Faculty of Medicine and Surgery, Manila, Philippines
5 Department of Occupational Therapy, University of Santo Tomas, Manila, Philippines
6 Institute of Information and Computing Sciences, Faculty of Engineering, Manila, Philippines