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zur Hausen A, van Grieken NC, Meijer GA, Hermsen MA, Bloemena E, Meuwissen SG, Baak JP, Meijer CJ, Kuipers EJ, van den Brule AJ.zur Hausen A, et al. Among authors: meijer ga, meijer cj.Gastroenterology. 2001 Sep;121(3):612-8. doi: 10.1053/gast.2001.27200.Gastroenterology. 2001.PMID: 11522745