[1] Univ London Imperial Coll Sci Technol & Med, Div Radiol, London, England
[2] Kings Coll London, London, England
[3] Univ Bologna, Div Internal Med, Bologna, Italy
[4] Inst Canc Res, Div Radiotherapy & Imaging, Joint Dept Phys, London SW3 6JB, England
[5] NHS Fdn Trust, Royal Marsden Hosp, London, England
[6] Goethe Univ Frankfurt, Dept Internal Med Endocrinol & Diabetol 1, D-60054 Frankfurt, Germany
[7] Paris Descartes Univ, Paris, France
[8] Necker Univ Hosp, Inst Langevin Ondes & Images ESPCI Paris Tech, CNRS, UMR 7587,INSERM,U979, Paris, France
[9] Haukeland Hosp, Natl Ctr Ultrasound Gastroenterol, Dept Med, N-5021 Bergen, Norway
[10] Univ Bergen, Dept Clin Med, N-5020 Bergen, Norway
[11] Med Univ Innsbruck, Dept Radiol, A-6020 Innsbruck, Austria
[12] Univ Med & Pharm Victor Babes Timisoara, Dept Gastroenterol & Hepatol, Timisoara, Romania
[13] Univ Pavia, Policlin San Matteo, Div Radiol, I-27100 Pavia, Italy
[14] Univ Roma La Sapienza, Policlin Umberto 1, Dept Radiol Sci Oncol & Pathol, I-00185 Rome, Italy
[15] Univ Verona, GB Rossi Univ Hosp, Dept Radiol, I-37100 Verona, Italy
[16] Univ Hosp Heraklion, Div Radiol, Iraklion, Greece
[17] Ecole Super Phys & Chim Ville Paris, Paris, France
[18] Goethe Univ Frankfurt, Dept Internal Med Gastroenterol & Hepatol 1, D-60054 Frankfurt, Germany
[19] Haukeland Hosp, Dept Med, Natl Ctr Ultrasound Gastroenterol, N-5021 Bergen, Norway
[20] Krankenhaus Markisch Oderland, Dept Internal Med, Div Gastroenterol, Strausberg, Germany
[21] Ernst Moritz Arndt Univ Greifswald, Breast Unit, Dept Obstet & Gynecol, Greifswald, Germany
[22] Univ Med & Pharm, Res Ctr Gastroenterol & Hepatol, Dept Gastroenterol, Craiova, Romania
[23] Caritas Krankenhaus, Div Gastroenterol & Oncol, Bad Mergentheim, Germany