Author affiliations
1. Baotou Clinical Medical College of Inner Mongolia Medical University,
Baotou, China
2. Department of Cardiology, Baotou Central Hospital, Baotou 014040,
China
Acknowledgements Our greatest acknowledgement goes to the
authors who made detailed data available for this meta-analysis and all
our colleagues in this study for their hard work.
Contributors WMH, BH and QL performed the search and drafted
the manuscript. WMH and YHZ performed the data extraction and analysed
the data. WMH, WL and YHZ designed the study and amended the original
draft.
Funding The authors have not declared a specific grant for this
research from any funding agency in the public, commercial or
not-for-profit sectors.
Competing interests None declared.
Patient and public involvement Patients and/or the public were
not involved in the design, or conduct, or reporting, or dissemination
plans of this research.
Patient consent for publication Not required.
Provenance and peer review Not commissioned; externally peer
reviewed.
Data availability statement All data relevant to the study are
included in the article or uploaded as supplementary information.
ORCID iD Weimin Huanghttps://orcid.org/0000-0003-2556-6214