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Sastre-Padro M, Welleweerd J, Malinen E, Eilertsen K, Olsen DR, van der Heide UA.Sastre-Padro M, et al. Among authors: malinen e.Phys Med Biol. 2007 Feb 21;52(4):1147-56. doi: 10.1088/0031-9155/52/4/019. Epub 2007 Jan 30.Phys Med Biol. 2007.PMID: 17264376