PCORnet® 2020: current state, accomplishments, and future directions.
J Clin Epidemiol. 2021 Jan;129:60-67. doi: 10.1016/j.jclinepi.2020.09.036. Epub 2020 Sep 28.
J Clin Epidemiol. 2021.
PMID: 33002635
Free PMC article.