STOKKEL, MARCEL P.M. M.D.; VAN ECK-SMIT, BERTHE L.F. M.D.
From the Department of Diagnostic Radiology and Nuclear Medicine, University Hospital Leiden, Leiden, The Netherlands
Received for publication October 25, 1994; revision accepted February 13, 1995.
Reprint requests: Marcel P.M. Stokkel, M.D., Department of Diagnostic Radiology and Nuclear Medicine, University Hospital Leiden, P.O. Box 9600, NL-2300 RC Leiden, The Netherlands.