Aronson Naomi, Flamm Carole R, Bohn Rhonda L, Mark David H, Speroff Theodore
Technology Evaluation Center, Blue Cross Blue Shield Association, Chicago, Illinois 60601-7680, USA.
Gastrointest Endosc. 2002 Dec;56(6 Suppl):S294-302. doi: 10.1067/mge.2002.129021.