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Christensen K, Fogh-Andersen P.Christensen K, et al.Am J Med Genet. 1993 Nov 1;47(6):910-6. doi: 10.1002/ajmg.1320470620.Am J Med Genet. 1993.PMID: 8279491
Basso O, Olsen J, Holm NV, Skytthe A, Vaupel JW, Christensen K.Basso O, et al. Among authors: christensen k.Epidemiology. 2000 Sep;11(5):576-80. doi: 10.1097/00001648-200009000-00014.Epidemiology. 2000.PMID: 10955411