1 Department of Medicine Huddinge, Karolinska Institutet, Stockholm, Sweden.
2 Department of Radiology, Karolinska University Hospital, Stockholm, Sweden.
3 Department of Radiology, University of Milano-Bicocca School of Medicine and Surgery, Fondazione IRCCS San Gerardo dei Tintori, Monza, Italy.
4 Mallinckrodt Institute of Radiology, Washington University in St. Louis, St. Louis, MO.
5 Department of Diagnostic Radiology, Tan Tock Seng Hospital, Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore.
6 Department of Radiology, Mayo Clinic, Rochester, MN.