| http://www.w3.org/ns/prov#value | - Pica ( /??pa??k??/ py-k??) is a medical disorder characterized by an appetite for substances largely non-nutritive (e.g., metal, clay, coal, sand, dirt, soil, feces, chalk, pens and pencils, paper, batteries, spoons, toothbrushes, soap, mucus, latex gloves, ash, gum, lip balm, tacks and other office supplies, etc.)[1][2] For these actions to be considered pica, they must persist for more than one
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