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Stephan FP, Nickel CH, Martin JS, Grether D, Delport-Lehnen K, Bingisser R.Stephan FP, et al. Among authors: bingisser r.Swiss Med Wkly. 2010 Jun 12;140(23-24):341-7. doi: 10.4414/smw.2010.12975.Swiss Med Wkly. 2010.PMID: 20175003Free article.