Given the significant statistical associations shown between mycotoxin exposure in children and height gain in infants and young children, the Nutrition Innovation Lab-Asia will undertake an mycotoxin birth cohort study to further the understanding of the causal relationship between past and current mycotoxin exposure (maternal and infant), birth outcomes and length-for-age in Nepali infants and young children. The study will also seek to validate the use of low cost data collection methods (e.g. dried blood spots versus venous blood samples) for mycotoxin analysis.