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Publisher's Note: Co-author Shida Wang’s affiliations

Posted by pbio on 18 Mar 2013 at 13:00 GMT

Dr Shida Wang has two institutional affiliations, whereas only one was originally listed. Dr Wang should be listed with the following affiliations:

Dental Research Institute, Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada
State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China

No competing interests declared.