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van den Brom R, Luttikholt SJ, Lievaart-Peterson K, Peperkamp NH, Mars MH, van der Poel WH, Vellema P.van den Brom R, et al.Tijdschr Diergeneeskd. 2012 Feb;137(2):106-11.Tijdschr Diergeneeskd. 2012.PMID: 22393844