1. Loyola Medicine/MacNeal Hospital, Berwyn, IL, USA
2. Guthrie Robert Packer Hospital, Sayre, PA, USA
3. University of Missouri, Columbia, USA
4. Loyola University Health System, Maywood, IL, USA
5. Lehigh Valley Health Network, Allentown, PA, USA
6. Mercy Health Grand Rapids, Grand Rapids, MI, USA