Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleA Chink in the Armor.AuthorsCaskey, Walter H.; Gill, Jane R.; Graham, PatriciaPublicationHeadache: The Journal of Head & Face Pain, 1978, Vol 18, Issue 4, p184ISSN0017-8748Publication typeArticleDOI10.1111/j.1526-4610.1978.hed1804184.x