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Kirpensteijn J, Maarschalkerweerd RJ, van der Gaag I, Kooistra HS, van Sluijs FJ.Kirpensteijn J, et al. Among authors: maarschalkerweerd rj.Vet Q. 2001 Apr;23(2):67-70. doi: 10.1080/01652176.2001.9695084.Vet Q. 2001.PMID: 11361101Free article.
Maarschalkerweerd RJ, van Zuilen CD, van Klaveren NJ.Maarschalkerweerd RJ, et al.Tijdschr Diergeneeskd. 2009 Oct 15;134(20):850-2.Tijdschr Diergeneeskd. 2009.PMID: 19891328Dutch.No abstract available.