- Correspondence to Dr Thomas D Wang, Department of Medicine, Biomedical Engineering, Mechanical Engineering, University of Michigan, Division of Gastroenterology, 109 Zina Pitcher Pl. BSRB 1522, Ann Arbor, MI 48109-2200, USA;
- Received June 12, 2014
- Revised April 14, 2015
- Accepted April 17, 2015
- First published May 14, 2015.
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