患儿男，7岁，反复腹痛1年，时有反酸、恶 心，中上腹压痛，近半年食欲差，体重减 轻。大便黄色。应首选的辅助检查是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='28532' and id < 2330245 and id<>'2330245' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='28532' and id > 2330245 and id<>'2330245' order by id asc limit 5