Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleMETHODOLOGY, PRINCIPLES AND ANALYSIS OF EPIDEMIOLOGICAL STUDIES IN HEADACHE.AuthorsWaters, W.E.PublicationHeadache: The Journal of Head & Face Pain, 1975, Vol 15, Issue 2, p148ISSN0017-8748Publication typeArticleDOI10.1111/j.1526-4610.1975.hed1502148.x