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Tournier A, Würtenberger S, Klein SD, Baumgartner S.Tournier A, et al. Among authors: klein sd.J Altern Complement Med. 2021 Jan;27(1):45-57. doi: 10.1089/acm.2020.0243. Epub 2020 Oct 28.J Altern Complement Med. 2021.PMID: 33121261
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Kloter E, Barrueto K, Klein SD, Scholkmann F, Wolf U.Kloter E, et al. Among authors: klein sd.Front Physiol. 2018 May 29;9:623. doi: 10.3389/fphys.2018.00623. eCollection 2018.Front Physiol. 2018.PMID: 29896113Free PMC article.
Klein SD, Torchetti L, Frei-Erb M, Wolf U.Klein SD, et al.PLoS One. 2015 Oct 29;10(10):e0141985. doi: 10.1371/journal.pone.0141985. eCollection 2015.PLoS One. 2015.PMID: 26513370Free PMC article.
Hoffmann A, Klein SD, Gründemann C, Garcia-Käufer M, Wolf U, Huber R.Hoffmann A, et al. Among authors: klein sd.Phytother Res. 2016 Sep;30(9):1481-6. doi: 10.1002/ptr.5649. Epub 2016 Jun 10.Phytother Res. 2016.PMID: 27282490Clinical Trial.