About the Authors
- Lizheng Guan
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Contributed equally to this work with: Lizheng Guan, Yingqiang Xiang
Affiliation Department of Family Medicine, School of Public Health and Family Medicine, Capital Medical University, Beijing, China
- Yingqiang Xiang
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Contributed equally to this work with: Lizheng Guan, Yingqiang Xiang
Affiliation Beijing An Ding Hospital, Capital Medical University, Beijing, China
- Xin Ma
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Affiliation Beijing An Ding Hospital, Capital Medical University, Beijing, China
- Yongzhen Weng
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Affiliation Beijing An Ding Hospital, Capital Medical University, Beijing, China
- Wannian Liang
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* E-mail: guanlzh@sina.com
Affiliations Department of Family Medicine, School of Public Health and Family Medicine, Capital Medical University, Beijing, China, Department of Healthcare Reform, National Health and Family Planning Commission of P.R.C., Beijing, China
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Conceptualization: LG YX WL. Data curation: LG YX. Formal analysis: YW. Funding acquisition: XM. Investigation: LG YX XM YW. Methodology: LG WL. Project administration: XM WL. Resources: XM WL. Software: LG. Supervision: XM WL. Validation: XM. Writing – original draft: LG YX. Writing – review & editing: LG YX.