Mary S Vaughan Sarrazin1, Adam Rose2. 1. Comprehensive Access and Delivery Research and Evaluation Center (CADRE), Iowa City VA Medical Center, Iowa City, IA 52246, USA Department of Internal Medicine, Roy J and Lucille A Carver College of Medicine, University of Iowa, 200 Hawkins Drive, Iowa City, IA 52242, USA. 2. Center for Healthcare Organization and Implementation Research (CHOIR), Edith Nourse Rogers Memorial Veterans Hospital, Bedford, MA 01730, USA Medical Center and Department of Medicine, Boston University School of Medicine, Boston, MA 02118, USA.