Zullig Leah L, Carpenter William R, Williams Christina D
Center for Health Services Research in Primary Care, Durham VA Health Care System, Durham, NC, USA;; Division of General Internal Medicine, Duke University, Durham, NC, USA.
Department of Health Policy and Management, University of North Carolina, Chapel Hill, NC, USA.
Ann Transl Med. 2017 Mar;5(5):118. doi: 10.21037/atm.2017.01.25.