Mayo Clinic, Jacksonville, Florida, United States
Mayo Clinic Rochester, Rochester, Minnesota, United States
FirstHealth of the Carolinas, Inc., Pinehurst, North Carolina, United States
Dayton VA Medical Center, Dayton, Ohio, United States
Rush University Medical Center, Chicago, Illinois, United States
Temple University, Philadelphia, Pennsylvania, United States
Mayo Clinic Rochester, Rochester, Minnesota, United States
University of Pennsylvania, Philadelphia, Pennsylvania, United States
Hospital Universitario de Salamanca, Salamanca, Spain
Radboud University Medical Center, Nijmegen, Netherlands
Prince of Wales Hospital, Sha Tin, Hong Kong
Fundacion Instituto de Investigation Sanitaria de la Fundacion Jimenez Diaz, Madrid, Spain
Radboud University Medical Center, Nijmegen, Netherlands
Hospital Universitario de Salamanca, Salamanca, Spain