胃蛋白酶原Ⅰ和胃蛋白酶Ⅱ在胃癌筛查中的诊断价值
위단백매원Ⅰ화위단백매Ⅱ재위암사사중적진단개치
The Value of Pepsinogen Ⅰ and Pepsinogen Ⅱ in the Screening of Gastric Cancer
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