" Simulation and Standardized Patient Encounters as a Method to Assess Residents in Emergency Stabilization (PC1) Milestones Routinely Identified as Difficult to Evaluate in the Clinical Setting " King, Andrew; Calcara, David; Liddil, Jessica; Greenberger, Sarah; Panchal, Ashish; McGrath, Jillian; Green, Brad; Khandelwal, Sorabh