<unk><unk><unk>  can occur in any age group, region, gender but there are some factors that predispose individuals of some groups to develop<unk><unk> .
Iron deficiency anemia epidemiology and demographics
Macrocytic anemia epidemiology and demographics
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Lead poisoning epidemiology and demographics
Thrombophilia epidemiology and demographics
Peptic ulcer epidemiology and demographics
Aplastic anemia epidemiology and demographics
Ascariasis epidemiology and demographics