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Müller O, Nachtegaal M, Just J, Lützenkirchen-Hecht D, Frahm R.Müller O, et al. Among authors: frahm r.J Synchrotron Radiat. 2016 Jan;23(1):260-6. doi: 10.1107/S1600577515018007. Epub 2016 Jan 1.J Synchrotron Radiat. 2016.PMID: 26698072Free PMC article.