患儿,女,1岁,面色苍白.3个月,牛奶喂养, RBC 2.5 X 1012/L ,Hb 80g/L ,MCV 96fL, MCH 35pg,WBC和PLT正常,网织红细胞0.012,其最可能的诊断是
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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