[1] UNIV WISCONSIN, CTR HLTH SCI, DEPT MED, MADISON, WI 53706 USA
[2] UNIV WISCONSIN, CTR HLTH SCI, NEPHROL PROGRAM, MADISON, WI 53706 USA
[3] UNIV WISCONSIN, CTR HLTH SCI, DEPT RADIOL, MADISON, WI 53706 USA
[4] MALMO ALMANNA SJUKHUS, ROENTGENDIAG DEPT, MALMO, SWEDEN