Biliary Tract Diseases

• Centralsjukhuset, Dept of Oncology — Karlstad, Sweden
• University Hospital Lund — Lund, Sweden
• University Hospital Malmö, Dept of Oncology — Malmö, Sweden
• Karolinska University Hospital — Stockholm, Sweden

• S.Orsola-Malpighi University Hospital - University of Bologna — Bologna, Italy

• Maine Medical Center — Portland, Maine, United States

• TUMS Digestive Disease Research Center — Tehran, Tehran Province, Iran

• Department of Surgery, University Hospital — Linköping, Sweden

• Hospital De La Serena — La Serena, Coquimbo Region, Chile

• Sentral Hospital Buskerud — Drammen, Norway
• Sentral Hospital Østfold — Fredrikstad, Norway
• Sykehuset Innlandet Gjøvik — Gjøvik, Norway
• Sykehuset Innlandet Lillehammer — Lillehammer, Norway

• Hôpital Hôtel Dieu — Paris, France

Not specified

• Second Department of Surgery, Wakayama Medical University, School of Medicine, 811-1 Kimiidera — Wakayama, Japan