Fundacion de Investigacion de Diego, Santurce, Puerto Rico
Royal Victoria Hospital, Montréal, Quebec, Canada
The Liver INstitute at Methodist Dallas, Dallas, Texas, United States
Atlanta Gastroenterology Associates, Atlanta, Georgia, United States
South Denver Gastroenterology, Englewood, Colorado, United States
University of Florida, Gainesville, Florida, United States
Indiana University, Department of Medicine,Division of Gastroenterology / Hepatology, Indianapolis, Indiana, United States
Univ.of Virginia Health System, Charlottesville, Virginia, United States
Sunnybrooke Health Sciences Centre, Toronto, Ontario, Canada
Hopital du Sacre-Coeur de Montreal, Montreal, Quebec, Canada
Emory University - Winship Cancer Institute, Atlanta, Georgia, United States
Cleveland Clinic - Taussig Cancer Center, Cleveland, Ohio, United States
California Pacific Medical Center Research Institute, San Francisco, California, United States
Johns Hopkins Hospital, Baltimore, Maryland, United States
The Children's Hospital, Aurora, Colorado, United States
Stanford University Medical Center, Palo Alto, California, United States
North Shore University Hospital, Manhasset, New York, United States
Academic Medical Center, Amsterdam, Netherlands
University of Florida, Gainesville, Florida, United States
Call For Information, Ljubljana, Slovenia
Call for Information, Torun, Poland