Centralny Szpital Kliniczny MSWiA, Warszawa, Poland
Hong Kong Sanatorium Hospital, Hong Kong, China
Universitätsklinikum des Saarlandes, Homburg, Germany
Ospedale Santa Maria Annunziata, Bagno a Ripoli, Italy
Azienda Ospedaliera S. Sebastiano, Caserta, Italy
Ospedale Valduce, Como, Italy
University of Texas M.D. Anderson Cancer Center, Houston, Texas, United States
Karmanos Cancer Institute, Detroit, Michigan, United States
University Hospital of Strasbourg, Strasbourg, France
Clinica Universitaria de Navarra, Pamplona, Spain
Karolinska Hospital, Stockholm, Sweden
Golden Jubilee National Hospital, Clydebank, United Kingdom
Vinay Kumar, Laurel, Mississippi, United States
Andrey Espinoza, MD, Flemington, New Jersey, United States
Nelson Bernardo MD, Washington DC, District of Columbia, United States
Amsterdam Medical Center, Amsterdam, Netherlands
University Hospital Maastricht, Maastricht, Netherlands
Hospital Aleman / Programa de Unidades Bariátricas, Autonoma de Bueno Aires, Argentina
Cardiovascular and Vein Center of Florida, Bradenton, Florida, United States
Our Lady of Lourdes Medical Center, Haddon Heights, New Jersey, United States
Union Memorial Hospital, Baltimore, Maryland, United States
NEA Baptist Memorial Hospital, Jonesboro, Arkansas, United States
University Medical Center Groningen - UMCG, Groningen, The Netherlands, Netherlands