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Gregorio-King CC, McLeod JL, Collier FM, Collier GR, Bolton KA, Van Der Meer GJ, Apostolopoulos J, Kirkland MA.Gregorio-King CC, et al. Among authors: mcleod jl.Gene. 2002 Mar 20;286(2):249-57. doi: 10.1016/s0378-1119(02)00434-1.Gene. 2002.PMID: 11943480