Disclosure statement
No potential conflict of interest was reported by the author(s).
IRB approval status
N/A.
Clinicaltrials.gov (or equivalent) listing (if applicable)
N/A.
Reprint requests
Jeffrey M. Cohen
Data availability statement
The data that support the findings of this study are openly available in the Centers for Medicare and Medicaid Services Medicare Provider Utilization and Payment Data: Part D at https://www.cms.gov/Research-Statistics-Data-and-Systems/Statistics-Trends-and-Reports/Medicare-Provider-Charge-Data/Part-D-Prescriber