Choong, Peter F M, Pelle Gustafson, and Anders Rydholm. 1995. “Size and Tinning of Local Recurrence Predicts Metastasis in Soft Tissue Sarcoma Growth Rate Index Retrospectively Analyzed in 134 Patients”. Acta Orthopaedica 66 (2):147-52. https://doi.org/10.3109/17453679508995509.