Wan Y L, Lee T Y, Gau J S, Lui K W
First Department of Diagnostic Radiology, Chang Gung Memorial Hospital at Linkou and Kaohsiung, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan.
Postgrad Med J. 1998 Mar;74(869):175-6. doi: 10.1136/pgmj.74.869.175.