 | Even though ulcers(溃疡) appear to run in families, lifestyle plays扮演 more of a role角色 than genetic(基因的) factors in causing the illness, according to a report in the April 13th Journal of Internal Medicine. In particular, smoking and stress in men and the regular use of pain-releasing medicines in women were linked with an increased risk of developing an ulcer.逗号后面的重要, 中心词lifestyle 所在句也是逗号句啊,我有些分不清了,请老师指点
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