We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleCotinine conundrum--a step forward but questions remain.AuthorsSpitz MR; Amos CI; Bierut LJ; Caporaso NEPublicationJournal of the National Cancer Institute, 2012, Vol 104, Issue 10, p720ISSN1460-2105Publication typearticleDOI10.1093/jnci/djs211