1 Department of Abdominal Surgery, Helsinki University Hospital, Helsinki, Finland.
2 Applied Tumor Genomics Research Program, University of Helsinki, Helsinki, Finland.
3 Department of Medical Oncology, The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins Hospital and The Johns Hopkins University, Baltimore, MD, USA.
4 Division of Hepatobiliary and Pancreatic Surgery, The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins Hospital and The Johns Hopkins University, Baltimore, MD, USA. burkhart@jhmi.edu.