Trummer Arne, Oldhafer Karl-Jürgen, Flemming Peer, Hollerbach Stephan
Department of Hematology, Hemostaseology and Oncology, Medical School of Hannover, Germany.
Gastrointest Endosc. 2006 Oct;64(4):658-60. doi: 10.1016/j.gie.2006.04.013. Epub 2006 Jul 26.