Adriansyah, R., N. Idris, M. Djer, S. Putra, and R. Rohsiswatmo. “Intravenous Paracetamol and Patent Ductus Arteriosus Closure in Preterm Infants”. Paediatrica Indonesiana, Vol. 57, no. 4, Jan. 2018, pp. 198-04, doi:10.14238/pi57.4.2017.198-204.