VanderWeele Tyler J, Martin Jeffrey N, Mathur Maya B
Departments of Epidemiology and Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA,
Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, CA.
Epidemiology. 2020 Nov;31(6):e51-e52. doi: 10.1097/EDE.0000000000001238.