1 Department of Radiology, Vancouver General Hospital, University of British Columbia, Vancouver, BC, Canada. Electronic address: tyler.coupal@medportal.ca.
2 Professor of Radiology, Orthopaedics and Palliative Care, University of British Columbia, Vancouver, BC, Canada.
3 Professor of Otorhinolaryngology, University of the Philippines Manila, Manila, Philippines.
4 Professor of Radiology Khoo Teck Puat Hospital, Singapore, Yong Loo Lin School of Medicine, National University of Singapore.