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Nelson KM, Helfrich C, Sun H, Hebert PL, Liu CF, Dolan E, Taylor L, Wong E, Maynard C, Hernandez SE, Sanders W, Randall I, Curtis I, Schectman G, Stark R, Fihn SD.Nelson KM, et al.JAMA Intern Med. 2014 Aug;174(8):1350-8. doi: 10.1001/jamainternmed.2014.2488.JAMA Intern Med. 2014.PMID: 25055197
Dolan ED, Mohr D, Lempa M, Joos S, Fihn SD, Nelson KM, Helfrich CD.Dolan ED, et al. Among authors: helfrich cd.J Gen Intern Med. 2015 May;30(5):582-7. doi: 10.1007/s11606-014-3112-6. Epub 2014 Dec 2.J Gen Intern Med. 2015.PMID: 25451989Free PMC article.