Steinberg Alexander W, Wechsler Michael E, Fernández Pérez Evans R
Saint Joseph Hospital, Denver, Colorado (A.W.S.).
National Jewish Health, Denver, Colorado (M.E.W., E.R.F.).
Ann Intern Med. 2020 Jan 21;172(2):160-163. doi: 10.7326/M19-1564. Epub 2019 Oct 8.