Christian, P., Lee, S. E., Donahue Angel, M., Adair, L. S., Arifeen, S. E., Ashorn, P., . . . Hao, W. (2013). Risk of childhood undernutrition related to small-for-gestational age and preterm birth in low-and middle-income countries. International Journal of Epidemiology, 42(5), 1340-1355.