Name Info Provider Link
subscription/membership/fee required Chinese Medical Association Publishing House Ltd. https://www.yiigle.com/LinkIn.do?linkin_type=pubmed&DOI=10.3760/cma.j.issn.0253-2727.2021.12.009
free resource PubMed Central https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/35045673/
free resource Europe PubMed Central https://europepmc.org/abstract/MED/35045673