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Cancer incidence was represented by cohort parameters showing the risk of the cohorts in relation to each other. No statistically significant association between the two events was noted. Although not significant, our data are consistent with an elevated relative risk for breast cancer of 1.3 and a decreased risk for ovarian cancer of 0.5.<\/jats:p>","DOI":"10.1002\/ijc.2910340514","type":"journal-article","created":{"date-parts":[[2007,2,19]],"date-time":"2007-02-19T19:40:19Z","timestamp":1171914019000},"page":"671-674","source":"Crossref","is-referenced-by-count":7,"title":["Oral contraceptives containing chlormadinone acetate and cancer incidence at selected sites in the German Democratic Republic \u2010 A correlation analysis"],"prefix":"10.1002","volume":"34","author":[{"given":"P.","family":"Nischan","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"K.","family":"Ebeling","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2006,7,17]]},"reference":[{"key":"e_1_2_1_2_1","first-page":"13","article-title":"Increase in cancer of the corpus uteri in the San Francisco\u2010Oakland Standard Metropolitan Statistical Area, 1960\u20101975","volume":"62","author":"Austin D. 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