<style face="normal" font="default" size="100%">Physical and psychological co-morbidity in irritable bowel syndrome: a matched cohort study using the General Practice Research Database</style>

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31<style face="normal" font="default" size="100%">Physical and psychological co-morbidity in irritable bowel syndrome: a matched cohort study using the General Practice Research Database</style><style face="normal" font="default" size="100%">Physical and psychological co-morbidity in irritable bowel syndrome: a matched cohort study using the General Practice Research Database</style>