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Ringers J, Rauws EA, de Wit LT, van der Heyde MN.Ringers J, et al.Ned Tijdschr Geneeskd. 1992 May 16;136(20):971-3.Ned Tijdschr Geneeskd. 1992.PMID: 1534393Dutch.No abstract available.
Bemelman WA, van der Made WJ, Mulder EJ, Ringers J, van Hogezand RA.Bemelman WA, et al. Among authors: ringers j.Neth J Med. 1997 Feb;50(2):S19-22. doi: 10.1016/s0300-2977(96)00067-8.Neth J Med. 1997.PMID: 9050329