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Hornbrook MC, Goodman MJ, Fishman PA, Meenan RT, O'Keeffe-Rosetti M, Bachman DJ.Hornbrook MC, et al.Int J Qual Health Care. 1998 Dec;10(6):531-8. doi: 10.1093/intqhc/10.6.531.Int J Qual Health Care. 1998.PMID: 9928592