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Sutter FK, Landau K.Sutter FK, et al.Swiss Med Wkly. 2003 May 17;133(19-20):293-4. doi: 10.4414/smw.2003.10206.Swiss Med Wkly. 2003.PMID: 12844273Free article.
Werling D, Sutter F, Arnold M, Kun G, Tooten PC, Gruys E, Kreuzer M, Langhans W.Werling D, et al.Res Vet Sci. 1996 Nov;61(3):252-7. doi: 10.1016/s0034-5288(96)90073-9.Res Vet Sci. 1996.PMID: 8938857