- Correspondence to Dr Wei-cheng You, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Cancer Epidemiology, Peking University Cancer Hospital & Institute, 52 Fu-cheng Road, Hai-dian District, Beijing 100142, P. R. China; Dr. Meinhard Classen, Technische Universität München, International Digestive Cancer Alliance, 81675 Munich, Germany; email@example.com
- Received January 15, 2015
- Revised April 20, 2015
- Accepted April 24, 2015
- First published May 18, 2015.
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