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Ponto KA, Pitz S, Pfeiffer N, Hommel G, Weber MM, Kahaly GJ.Ponto KA, et al. Among authors: pfeiffer n.Dtsch Arztebl Int. 2009 Apr;106(17):283-9. doi: 10.3238/arztebl.2009.0283. Epub 2009 Apr 24.Dtsch Arztebl Int. 2009.PMID: 19547630Free PMC article.