1. From the Departments of Radiology (A. Dangis, C.G., Y.D.B., L.J., A. Demeyere, R.S.), Microbiology (H.V., D.O., J.F.), and Emergency Medicine (M.G.), Imelda Hospital, Imeldalaan 9, 2820 Bonheiden, Belgium; and Department of Microbiology, University Hospital Leuven, Leuven, Belgium (M.V.R.).