Acknowledgments
Fund: This work was supported by a grant from the International Exchange Foundation of Chinese Medical Association ”Special Fund for International Diabetes Exchange and Practice” , China (Z-2017-26-1902)
Conflicts of interest: No conflicts of interest, financial or otherwise, are declared by the authors.
Availability of data and material: The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.
Code availability: Not applicable.
Authors’ contributions: YJ designed the search strategy with input from YF and CH, and YJ as well as YQ carried out the literature searches and screening, and any discrepancies were discussed with LY and CH, and LY as well as YJ wrote the first draft of the review with input from CH, YQ,YF, ZY, ZY Wang, JL and WC. JY and YJ were responsible for English editing. All authors have read and approved the final manuscript.
Ethics approval: Not applicable.
Consent to participate: Not applicable.
Consent for publication: Not applicable.