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Schornagel JH, van der Vegt S, Verweij J, de Graeff A, Dullemond-Westland A, van Deijk WA, ten Bokkel Huinink WW.Schornagel JH, et al. Among authors: ten bokkel huinink ww.Ann Oncol. 1992 Jul;3(7):549-52. doi: 10.1093/oxfordjournals.annonc.a058258.Ann Oncol. 1992.PMID: 1498076Free article.Clinical Trial.