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[81], 2004, Viet Nam, Bac Ninh province, rural, 292, children, 6-9 yr, 45.2, nr, nr, 6 ... [463], 1987, South Korea, unspecified, urban, 375, children 7 yr, 6.1, nr, 3, Korean ... of primary school children assessed with the modified-relative-dose-?response test. ... Quizhpe E, San SM, Hurtig AK, Llamas A. [Prevalence of anaemia in ...