Iyigun, T., Ciloglu, U., Ariturk, C., Civelek, A., & Tosun, R. (2010). Recurrent Cardiac Metastasis of Primary Femoral Osteosarcoma: A Case Report. The Heart Surgery Forum, 13(5), E333-E335. https://doi.org/10.1532/HSF98.20101006