Weinstock L B, Wu J S, Malden E S, Garcia K M, Rubin B G, Brunt L M
Departments of Medicine, Radiology and Surgery, Barnes-Jewish Hospital, Mallinkrodt Institute of Radiology and Washington University School of Medicine, St. Louis, Missouri, USA.
Gastrointest Endosc. 1999 Apr;49(4 Pt 1):537-40. doi: 10.1016/s0016-5107(99)70061-1.