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Heijtink RA, Kruining J, Honkoop P, Kuhns MC, Hop WC, Osterhaus AD, Schalm SW.Heijtink RA, et al. Among authors: hop wc.J Med Virol. 1997 Nov;53(3):282-7.J Med Virol. 1997.PMID: 9365897
de Jongh FE, Janssen HL, de Man RA, Hop WC, Schalm SW, van Blankenstein M.de Jongh FE, et al. Among authors: hop wc.Gastroenterology. 1992 Nov;103(5):1630-5. doi: 10.1016/0016-5085(92)91188-a.Gastroenterology. 1992.PMID: 1426884
Ginai AZ, van Buuren HR, Hop WC, Schalm SW.Ginai AZ, et al. Among authors: hop wc.Br J Radiol. 1993 Apr;66(784):322-6. doi: 10.1259/0007-1285-66-784-322.Br J Radiol. 1993.PMID: 8495286
Wolfhagen FH, van Buuren HR, den Ouden JW, Hop WC, van Leeuwen JP, Schalm SW, Pols HA.Wolfhagen FH, et al. Among authors: hop wc.J Hepatol. 1997 Feb;26(2):325-30. doi: 10.1016/s0168-8278(97)80048-7.J Hepatol. 1997.PMID: 9059953Clinical Trial.
Groeneweg M, Quero JC, De Bruijn I, Hartmann IJ, Essink-bot ML, Hop WC, Schalm SW.Groeneweg M, et al. Among authors: hop wc.Hepatology. 1998 Jul;28(1):45-9. doi: 10.1002/hep.510280108.Hepatology. 1998.PMID: 9657095