1. Zachary F. Meisel, Frances Shofer, Abby Dolan, Erica B. Goldberg, Melissa A. Rodgers, Michael M. Zyla, Jeffrey J. Bell, Sharon McCollum, Eden Engel-Rebitzer, and Max Jordan Nguemeni Tiako are with the Center for Emergency Care Policy and Research, Department of Emergency Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia. Karin V. Rhodes is with the Agency for Healthcare Research and Quality, Bethesda, MD. Erik P. Hess is with the Vanderbilt University School of Medicine,...