Efficacy and safety of COVID-19 vaccines: a systematic review.
Zhongguo Dang Dai Er Ke Za Zhi. 2021 Mar;23(3):221-228. doi: 10.7499/j.issn.1008-8830.2101133.
Zhongguo Dang Dai Er Ke Za Zhi. 2021.
PMID: 33691913
Free PMC article.