GSTM1 and anemia (phenotype): Of the 181 non-pregnant women tested for anemia during phase 1, 100 were given a written recommendation to purchase iron pills: in 96 women, Hb<15.5 g/dL at the first or at a subsequent assessment; in 4 additional women Hb was 15.5–15.6 g/dL (these 4 recommendations were given because of notable weakness/fatigue and/or living at a higher than average elevation).