- Correspondence to Associate Professor Xiaomei Dong, Center for Injury Prevention and Control, Medical College of Jinan University, No.601 Huangpu avenue west, Guangzhou City, Guangdong Province 510632, China;
- Received August 25, 2016
- Revised February 13, 2017
- Accepted March 1, 2017
- First published April 6, 2017.
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