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Letts VA, Schork NJ, Copp AJ, Bernfield M, Frankel WN.Letts VA, et al. Among authors: copp aj.Genomics. 1995 Oct 10;29(3):719-24. doi: 10.1006/geno.1995.9946.Genomics. 1995.PMID: 8575765
Gerrelli D, Copp AJ.Gerrelli D, et al. Among authors: copp aj.Brain Res Dev Brain Res. 1997 Sep 20;102(2):217-24. doi: 10.1016/s0165-3806(97)00099-0.Brain Res Dev Brain Res. 1997.PMID: 9352104