Published on in Vol 6, No 1 (2021): Jan-Mar
1 Department of Health Sciences, University of York, York, United Kingdom
2 Department of Biostatistics and Epidemiology, Perelman School of Medicine, University of Pennsylvania, Pennsylvania, PA, United States
3 Center for Clinical Epidemiology and Biostatistics, Perelman School of Medicine, University of Pennsylvania, Pennsylvania, PA, United States