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Hahn EA, Holzner B, Kemmler G, Sperner-Unterweger B, Hudgens SA, Cella D.Hahn EA, et al. Among authors: holzner b.Eval Health Prof. 2005 Jun;28(2):233-59. doi: 10.1177/0163278705275343.Eval Health Prof. 2005.PMID: 15851775