Glower DD, Siegel LC, Galloway AC, Ribakove G, Grossi E, Robinson N, Ryan WH, Colvin S, Shemin R. Predictors of Operative Time in Multicenter Port-Access Valve Registry: Institutional Differences in Learning. HSF [Internet]. 2001Mar.1 [cited 2024Dec.4];4(1):E40-E46. Available from: https://journal.hsforum.com/index.php/HSF/article/view/6275