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Prevalence of infant stunting (
, adequate growth, length-for-age Z-score (HAZ) <+2 and ≥−2; 
, moderate stunting, HAZ ≥−3 and <−2; 
, severe stunting, HAZ <−3) in relation to the WHO reference median(
4
) in (a) the rural-village and (b) the urban-clinic sample. Data were obtained from newborns with a median age of 19 d from eight rural villages (n 200) and an urban clinic (n 106) in Quetzaltenango, western highlands of Guatemala
