O'Brien Matthew J, Kirley Kate A, Ackermann Ronald T
Division of General Internal Medicine and Geriatrics, Northwestern University Feinberg School of Medicine, Chicago, Illinois; Institute for Public Health and Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois.
American Medical Association, Chicago, Illinois.
Am J Prev Med. 2020 May;58(5):724-727. doi: 10.1016/j.amepre.2019.11.022. Epub 2020 Feb 24.