Aritonang, E., Rajagukguk, T., & Nasution, E. (2015). Analysis of Body Weight in Low Birth Weight Infant Based on Breastfeeding and Formula Milk for Two Weeks Nursing in Santa Elisabeth Hospital Medan. International Journal of Sciences: Basic and Applied Research (IJSBAR), 23(1), 308–317. Retrieved from https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/4122