Medizinische Univeristät Graz, Graz, Austria
Valley View Hospital, Glenwood Springs, Colorado, United States
Medstar Washington Hospital Center, Washington, District of Columbia, United States
North Georgia Heart Foundation, Gainesville, Georgia, United States
St. Elizabeth's Medical Center, Boston, Massachusetts, United States
Swedish Medical Center, Seattle, Washington, United States
Northeast Georgia Heart Center, Gainesville, Georgia, United States
CORBIC Cardio-Neuro-Vascular Institute, Medellin, Colombia