Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleLetters to the editor.AuthorsDirix, L. Y.; Prove, A. M.; Fierens, H.; van Oosterom, A. T.; Välimäki, Matti; Järvinen, Heikki; Salmela, Pasi; Sane, Timo; Sjöblom, Sini-Marja; Pelkonen, RistoPublicationCancer (0008543X), 1991, Vol 68, Issue 4, p922ISSN0008-543XPublication typeArticleDOI10.1002/1097-0142(19910815)68:4<922::AID-CNCR2820680441>3.0.CO;2-Z