Question: Iron deficiency anemia is treated with oral or parenteral preparations: 
 Options:  <1> Only ferrous salts should be used orally. <2> Only ferric salts should be used orally. <3> Orally, the most appropriate form is the iron-dextran complex. <4> Orally, the treatment should last a maximum of fifteen days. <5> Only ferrous salts should be used parenterally.
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