Article Information
PubMed
History
- Accepted April 13, 2016
- Published online October 17, 2016.
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- Latest version (August 22, 2016 - 08:37).
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© 2016 Joule Inc. or its licensors
Author Information
- Dongfeng Zhang, MD⇑,
- Weijing Wang, MD,
- Fang Li, MD
- Department of Epidemiology and Health Statistics, Medical College of Qingdao University, Shandong, Qingdao, China
- Correspondence to: Dongfeng Zhang, zhangdf1961{at}126.com