GSTM1 and anemia (phenotype): Recent data were available on the prevalence of malaria parasitemia and/or moderate-severe anemia (Hb<8 gm/dl) from 8 DHS and MIS [Angola (2006), Ethiopia (2007), Kenya (2007), Mozambique (2007), Rwanda (2007/8), Tanzania (2008) and Zambia (2006 and 2008)].