Key points are not available for this paper at this time.
aEvidence-based Medicine Center, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China bWHO Collaborating Centre for Guideline Implementation and Knowledge Translation, Lanzhou 730000, China cResearch Unit of Evidence-Based Evaluation and Guidelines, Chinese Academy of Medical Sciences (2021RU017), School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China dInstitute of Health Data Science, Lanzhou University, Lanzhou 730000, China eInstitute of Global Health, University of Geneva, Geneve, Switzerland Sponsorships or competing interests that may be relevant to content are disclosed at the end of this article. Published online ■ ■ *Corresponding author. Address: No.199, Donggang west road, Chengguan District, Evidence-based Medicine Center, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China. Phone number: (+86)18219614556. E-mail address: email protected (Y. Chen). This is an open access article distributed under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives License 4.0 (CCBY-NC-ND), where it is permissible to download and share the work provided it is properly cited. The work cannot be changed in any way or used commercially without permission from the journal. http://creativecommons.org/licenses/by-nc-nd/4.0/
Luo et al. (Wed,) studied this question.