Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleTo the editor.AuthorsHawkins, RobertPublicationCA: A Cancer Journal for Clinicians, 1967, Vol 17, Issue 6, p307ISSN0007-9235Publication typeArticleDOI10.3322/canjclin.17.6.307