1 Department of Dermatology and Skin Science, University of British Columbia, and Photomedicine Institute, Vancouver Coastal Health, Vancouver, BC, Canada. Electronic address: sunilkalia@vch.ca.
2 Department of Dermatology and Skin Science, University of British Columbia, and Photomedicine Institute, Vancouver Coastal Health, Vancouver, BC, Canada.
3 Centre for Health Evaluation and Outcome Sciences, St Paul's Hospital, and School of Population and Public Health, University of British Columbia, Vancouver, BC, Canada.