Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleIntroductory message.AuthorsLee Clark, R.PublicationCancer (0008543X), 1967, Vol 20, Issue 5, p603ISSN0008-543XPublication typeArticleDOI10.1002/1097-0142(1967)20:5<603::AID-CNCR2820200502>3.0.CO;2-2