2 Mallinckrodt Institute of Radiology, Washington University School of Medicine, 510 S. Kingshighway Blvd, St Louis, MO, 63110, USA. mariazulfiqar@wustl.edu.
3 Abdominal Section, Radiology Department, Facultad de Medicina Clinica Alemana de Santiago, Universidad del Desarrollo, Avenida Vitacura 5951, Santiago, Vitacura, Chile.
4 Mayo Clinic School of Medicine, Mayo Clinic Hospital, 5777 East Mayo Boulevard, Phoenix, AZ, 85054, USA.