Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleAuthor's Response.AuthorsGrace J Chan; Lawrence H Moulton; Stan Becker; Alvaro Muñoz; Robert E BlackPublicationInternational Journal of Epidemiology, 2009, Vol 38, Issue 1, p323ISSN0300-5771Publication typeArticleDOI10.1093/ije/dyn006