Hospital recorded morbidity and breast cancer incidence: a nationwide population-based case-control study.
INTRODUCTION: Chronic diseases and their complications may increase breast cancer risk through known or still unknown mechanisms, or by shared causes.The association between morbidities and breast cancer risk has not been studied in depth.METHODS: Data on all Danish women aged 45 to 85 years, diagnosed with breast cancer between 1994 and 2008 and d