A literature search of PubMed, EMBASE, the Cochrane Library, and Medline was conducted, and the literature from database inception up to April 30, 2021 was obtained. 
PubMed
A literature search of PubMed, EMBASE, the Cochrane Library, and Medline was conducted, and the literature from database inception up to April 30, 2021 was obtained. 
EMBASE
A literature search of PubMed, EMBASE, the Cochrane Library, and Medline was conducted, and the literature from database inception up to April 30, 2021 was obtained. 
Cochrane Library
A literature search of PubMed, EMBASE, the Cochrane Library, and Medline was conducted, and the literature from database inception up to April 30, 2021 was obtained. 
Medline