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Schütt-Abraham I, Knauer-Kraetzl B, Wormuth HJ.Schütt-Abraham I, et al. Among authors: wormuth hj.Berl Munch Tierarztl Wochenschr. 1992 Jan 1;105(1):10-5.Berl Munch Tierarztl Wochenschr. 1992.PMID: 1543476German.