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History
- October 3, 2018.
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The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY 4.0 International license.
Author Information
- ↵*Corresponding author: Dingmei Zhang, School of Public Health, Sun Yat-sen University, 74 Zhongshan Road II, Guangzhou, Guangdong, 510080, China. E-mail: zhdingm{at}mail.sysu.edu.cn Telephone number: 0086-20-87330595