Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleChapter II: SAMPLE AND METHODS.PublicationActa Psychiatrica Scandinavica, 1974, Vol 50, p9ISSN0001-690XPublication typeArticleDOI10.1111/j.1600-0447.1974.tb08496.x