From the *Institute of Digestive Disease, Department of Pathophysiology, Tongji University School of Medicine, Shanghai, China; and †Department of Internal Medicine II, Klinikum Grosshadern, Ludwig Maximilians University, Munich, Germany.
Received for publication December 3, 2011; accepted April 5, 2012.
Reprints: Yong-yu Li, MD, Institute of Digestive Disease, Department of Pathophysiology, Tongji University School of Medicine, 1239 Siping Rd, 200092 Shanghai, China (e-mail: [email protected]), and Martin Storr, MD, Department of Internal Medicine II, Klinikum Grosshadern, Ludwig Maximilians University, Marchioninistr 15, 81377 Munich, Germany (e-mail: [email protected]).
This work was supported by grants from the National Science Foundation of China to Dr. Yong-yu Li (No. 30971168 and 81141050) and from the Deutsche Forschungsgemeinschaft (DFG) to Dr Martin Storr (STO645/6-1).
The authors declare no conflict of interest.