Sunscreen Posts on Twitter in the United States and Canada, 2019: Content Analysis.

Sajjad S Fazel, PharmD, MPH; Emma K Quinn, BSc; Chelsea A Ford-Sahibzada, BSc; Steven Szarka, PhD; Cheryl E Peters, PhD 1Department of Oncology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada 2CAREX Canada, Simon Fraser University, Vancouver, BC, Canada 3Cancer Epidemiology and Prevention Research, Cancer Care Alberta, Alberta Health Services, Calgary, AB, Canada 4School of Health Sciences, University of Northern British Columbia, Prince George, BC, Canada