Alam, Anggraini, Abdurachman Sukadi, Nelly Risan, and Meita Dhamayanti. 2008. “Preterm and Low Birth Weight As Risk Factors for Infant Delayed Development”. Paediatrica Indonesiana 48 (1), 1-4. https://doi.org/10.14238/pi48.1.2008.1-4.