We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleAlexander Duncan Langmuir.AuthorsBrachman PSPublicationAmerican journal of epidemiology, 1996, Vol 144, Issue 8 Suppl, pS74ISSN0002-9262Publication typearticleDOI10.1093/aje/144.supplement_8.s74