Goertz R S, Raithel M, Strobel D, Wehler M, Janka R, Wein A, Maennlein G, Hahn E G, Boxberger F
Department of Internal Medicine 1, Erlangen University, Erlangen, Germany.
Endoscopy. 2009;41 Suppl 2:E228-9. doi: 10.1055/s-0029-1214497. Epub 2009 Sep 15.