Received: 24 September 2019
Accepted: 12 June 2020
First Online: 19 June 2020
Ethics approval and consent to participate
: This research is not considered human subject research as it does not involve interactions with – or interventions among – participants, and only de-identified data was available [CitationRef removed]. This research was not reviewed by an institutional review board; approval by an institutional review board was not needed because MarketScan® data are de-identified and comply with the Health Insurance Portability and Accountability Act.
: Not applicable.
: The authors declare that they have no competing interests.