Sastroasmoro, Sudigdo, Bambang Madiyono, Ismet Oesman, Sukman Putra, and Eva Soelaiman. 2019. “Transumbilical Balloon Atrial Septostomy With Echocardiographic Monitoring”. Paediatrica Indonesiana 28 (7-8), 160-6. https://doi.org/10.14238/pi28.7-8.1988.160-6.