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de Vries EF, van Dillen IJ, van Waarde A, Willemsen AT, Vaalburg W, Mulder NH, Hospers GA.de Vries EF, et al. Among authors: vaalburg w.Nucl Med Biol. 2003 Aug;30(6):651-60. doi: 10.1016/s0969-8051(03)00048-9.Nucl Med Biol. 2003.PMID: 12900291