@misc{indiciae2c3ff1a52ae0, title = {Nutritional supplementation and mental development.}, author = {S Grantham-McGregor and S Walker and C Powell}, year = {1991}, doi = {10.1016/0140-6736(91)91476-b}, url = {https://pubmed.ncbi.nlm.nih.gov/1679888/}, note = {Source identifier: 1679888} }