Back to matchesWe found a matchYour institution may have rights to this item. Sign in to continue.TitleTHE FIRST TWO AUTHORS REPLY.AuthorsVena, John E.; Graham, SaxonPublicationAmerican Journal of Epidemiology, 1992, Vol 135, Issue 7, p835ISSN0002-9262Publication typeArticleDOI10.1093/oxfordjournals.aje.a116373