We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleRegistration of observational studies: is it time?AuthorsWilliams RJ; Tse T; Harlan WR; Zarin DAPublicationCMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne, 2010, Vol 182, Issue 15, p1638ISSN1488-2329Publication typearticleDOI10.1503/cmaj.092252