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Sääv I, Stephansson O, Gemzell-Danielsson K.Sääv I, et al.PLoS One. 2012;7(11):e48948. doi: 10.1371/journal.pone.0048948. Epub 2012 Nov 14.PLoS One. 2012.PMID: 23155432Free PMC article.Clinical Trial.