We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleMerging and emerging cohorts: not worth the wait.AuthorsWillett, Walter C; Blot, William J; Colditz, Graham A; Folsom, Aaron R; Henderson, Brian E; Stampfer, Meir JPublicationNature, 2007, Vol 445, Issue 7125, p257ISSN1476-4687Publication typeJournal ArticleDOI10.1038/445257a