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Peters-Klimm F, Olbort R, Campbell S, Mahler C, Miksch A, Baldauf A, Szecsenyi J.Peters-Klimm F, et al. Among authors: mahler c.Int J Qual Health Care. 2009 Oct;21(5):363-71. doi: 10.1093/intqhc/mzp032. Epub 2009 Aug 14.Int J Qual Health Care. 2009.PMID: 19684033Free PMC article.