1. Retroperitoneal sarcoma perioperative risk stratification: A United States Sarcoma Collaborative evaluation of the ACS‐NSQIP risk calculator. Issue 4 (17th June 2020) Authors: Schwartz, Patrick B.; Stahl, Christopher C.; Ethun, Cecilia; Marka, Nicholas; Poultsides, George A.; Roggin, Kevin K.; Fields, Ryan C.; Howard, John H.; Clarke, Callisia N.; Votanopoulos, Konstantinos I.; Cardona, Kenneth; Abbott, Daniel E. Journal: Journal of surgical oncology Issue: Volume 122:Issue 4(2020) Page Start: 795 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗