Madiyono, B., Oesman, I., Sastroasmoro, S., Putra, S., Soelaeman, E., & Rachmad, K. (2018). Secundum Atrial Septal Defect Before and After Surgery. Paediatrica Indonesiana, 29(9-10), 199-208. https://doi.org/10.14238/pi29.9-10.1989.199-208