机体铁缺乏分为三个阶段，其中表现为血红蛋白和血细胞比容下降的阶段是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30438' and id < 2459338 and id<>'2459338' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30438' and id > 2459338 and id<>'2459338' order by id asc limit 5