Abdelfatah E, Guzzetta AA, Nagarajan N, Wolfgang CL, Pawlik TM, Choti MA, Schulick R, Montgomery EA, Meyer C, Thornton K, Herman J, Terezakis S, Frassica D, Ahuja N. Long-term outcomes in treatment of retroperitoneal sarcomas: A 15 year single-institution evaluation of prognostic features. J Surg Oncol. 2016 Jul; 114(1):56-64.