Madiyono, B., Achmad, J., Sastroasmoro, S., Oesman, I.N. and Putra, S.T. 1996. Clinical features and management of secundum atrial septal defect in infants and children. Medical Journal of Indonesia. 5, 1 (Jan. 1996), 42–8. DOI:https://doi.org/10.13181/mji.v5i1.844.