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为了探讨胃粘膜肠化生和异型增生（胃癌癌前病变）的可能致病因素．我们开展了临床流行病学调查，并对其相关因素进行了病例一对照研究，现报告如下。1资料与方法1．互调查对象：1993年2月～1996年12月在深圳市中医院就诊的门诊或住院的胃院痛患者，病理检查符合胃粘膜肠化或异
To investigate the possible pathogenic factors of gastric metaplasia and dysplasia (precancerous lesions of gastric cancer). We conducted a clinical epidemiological investigation and conducted a case-control study of the relevant factors. The report is as follows. 1 Materials and Methods 1. Interviewed: Gastrointestinal pain in outpatients or inpatients who were diagnosed in Shenzhen Chinese Medicine Hospital from February 1993 to December 1996.