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Montgomery JE, Irish JT, Wilson IB, Chang H, Li AC, Rogers WH, Safran DG.Montgomery JE, et al. Among authors: chang h.J Gen Intern Med. 2004 Oct;19(10):991-8. doi: 10.1111/j.1525-1497.2004.30381.x.J Gen Intern Med. 2004.PMID: 15482550Free PMC article.
Safran DG, Karp M, Coltin K, Chang H, Li A, Ogren J, Rogers WH.Safran DG, et al. Among authors: chang h.J Gen Intern Med. 2006 Jan;21(1):13-21. doi: 10.1111/j.1525-1497.2005.00311.x.J Gen Intern Med. 2006.PMID: 16423118Free PMC article.