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Groeneweg M, Quero JC, De Bruijn I, Hartmann IJ, Essink-bot ML, Hop WC, Schalm SW.Groeneweg M, et al. Among authors: schalm sw.Hepatology. 1998 Jul;28(1):45-9. doi: 10.1002/hep.510280108.Hepatology. 1998.PMID: 9657095
van der Rijt CC, Schalm SW.van der Rijt CC, et al. Among authors: schalm sw.J Hepatol. 1992 Mar;14(2-3):141-2. doi: 10.1016/0168-8278(92)90148-i.J Hepatol. 1992.PMID: 1500675Review.No abstract available.