https://www.ncbi.nlm.nih.gov/pmc/articles/PMC650043
https://www.healthaffairs.org/do/10.1377/hblog20190328.92628/full/
https://pubmed.ncbi.nlm.nih.gov/33378463/
https://link.springer.com/article/10.1186/s13063-018-2891-1
https://pubmed.ncbi.nlm.nih.gov/25394849/

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