/ BMJ
Treatment effects in randomised trials using routinely collected data for outcome assessment versus traditional trials: meta-research study.
Mc Cord KA, Ewald H, Agarwal A, Glinz D, Aghlmandi S, Ioannidis JPA, Hemkens LG.
BMJ. 2021 Mar 3;372:n450.
doi: 10.1136/bmj.n450. PMID: 33658187; PMCID: PMC7926294.