NYU School of Medicine, New York, New York, United States
Baptist Hospital of Miami, FL, Miami, Florida, United States
Rush University Medical Center, Chicago, Illinois, United States
William Beaumont Hospital, Royal Oak, Michigan, United States
Hartford Hospital, Hartford, Connecticut, United States
East Carolina University, Greenville, North Carolina, United States
Boone Hospital, Columbia, Missouri, United States
Abbott Vascular, Santa Clara, California, United States
Florida Pain Institute, Merritt Island, Florida, United States
Premier Pain Center, Shrewsbury, New Jersey, United States
Southeastern Spine Institute, Mount Pleasant, South Carolina, United States
Herzzentrum Leipzig GmbH, Leipzig, Germany
Universitätsklinikum Bonn AdöR, Bonn, Germany
Hospital Universitario de La Princesa, Madrid, Spain
Hospital de São João, E.P.E., Porto, Portugal
Hippocration Hospital, University of Athens, Athens, Greece
Herzzentrum Dresden GmbH Universitätsklinik, Dresden, Germany
Herzzentrum Leipzig GmbH, Leipzig, Germany