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Cohen ND, Heck FC, Heim B, Flad DM, Bosler EM, Cohen D.Cohen ND, et al. Among authors: heck fc.J Am Vet Med Assoc. 1992 Oct 1;201(7):1030-4.J Am Vet Med Assoc. 1992.PMID: 1429127
Heck FC, Nielsen KH, Williams JD, Crawford RP, Adams LG.Heck FC, et al.Aust Vet J. 1984 Aug;61(8):265-6. doi: 10.1111/j.1751-0813.1984.tb15542.x.Aust Vet J. 1984.PMID: 6439181No abstract available.
Heck FC, Williams JD, Zink DL, Gilmore WC, Adams LG.Heck FC, et al.Br Vet J. 1981 Sep-Oct;137(5):520-6. doi: 10.1016/s0007-1935(17)31591-9.Br Vet J. 1981.PMID: 6796193No abstract available.