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据《Japane。JournalofCancerResearch》1996年87卷第4期报道，日本学者ShogoKikUChi等研究了日本kanto地区9所医院108例40岁以下胃癌病人（86％是扩散型）。首先比较病人双亲和一般人群的胃癌发病率，发现现察值／期望值（P值）如下：对于所有病人有1．8（0．06）、对男性病人
According to "Japane. According to Journal of Cancer Research, 1996, No. 87, No. 4, Japanese scholar Shogo Kik UChi et al. studied 108 cases of gastric cancer patients under 40 years of age in 9 hospitals in Kanto region of Japan (86% were spread type). First, the incidence of gastric cancer was compared between the patient’s dual-affinity general population and the observed/predicted value (P-value) was found to be as follows: 1.8 (0.06) for all patients, for male patients