Affiliation: | 2. Department of Surgery, University of Nebraska, College of Medicine, Omaha, Nebraska;2. Second Affiliated Hospital, China Medical University, Shenyang, China;3. Research Center for Medical Education, China Medical University, Shenyang, China;2. NorthShore University HealthSystem, Evanston, Illinois;3. Feinberg School of Medicine, Northwestern University, Chicago, Illinois;1. Department of Surgery, MetroHealth Medical Center, Case Western Reserve University School of Medicine, Cleveland, OH;2. Department of Surgery, University of Nebraska Medical Center, Omaha, NE |