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Christenson RK, Leymaster KA, Young LD.Christenson RK, et al. Among authors: young ld.J Anim Sci. 1987 Sep;65(3):738-44. doi: 10.2527/jas1987.653738x.J Anim Sci. 1987.PMID: 3667437
Christenson RK, Vallet JL, Leymaster KA, Young LD.Christenson RK, et al. Among authors: young ld.J Reprod Fertil Suppl. 1993;48:279-89.J Reprod Fertil Suppl. 1993.PMID: 8145211Review.
Freking BA, Leymaster KA, Young LD.Freking BA, et al. Among authors: young ld.J Anim Sci. 2000 Jun;78(6):1422-9. doi: 10.2527/2000.7861422x.J Anim Sci. 2000.PMID: 10875622