Changes in industry marketing payments to physicians during the covid-19 pandemic: quasi experimental, difference-in-difference study

Inoue K, Figueroa JF, Kondo N, Tsugawa Y. Changes in industry marketing payments to physicians during the covid-19 pandemic: quasi experimental, difference-in-difference study. BMJ Med. 2022 Sep 6;1(1):e000219. doi: 10.1136/bmjmed-2022-000219. PMID: 36936580; PMCID: PMC9978761.


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