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广西北海读者庞某来信说:我7岁儿子最近因十二指肠溃疡住院治疗。我想请教一下,在平时饮食方面
Pangmou Letter from Beihai, Guangxi Reader: My 7-year-old son has recently been hospitalized for duodenal ulcer. I would like to ask, in the usual diet