Djer, Mulyadi, Sudigdo Sastroasmoro, and Bambang Madiyono. 2013. “Heart Size, Heart Function, and Plasma B-Type Natriuretic Peptide Levels After Transcatheter Closure of Patent Ductus Arteriosus”. Paediatrica Indonesiana 53 (3), 181-6. https://doi.org/10.14238/pi53.3.2013.181-6.