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在1945年以前，儿科临床上，常见冬季的肺炎和夏季的消化不良是发病率最高的疾病。然而近年来冬季的消化不良却占了压倒的多数。作者调查了298例2岁以下的消化
Before 1945, pediatric clinics, common winter pneumonia and summer dyspepsia were the most prevalent diseases. However, indigestion in winter has accounted for the overwhelming majority. The authors investigated the digestion of 298 under 2 years of age