1. 2021 State Physician Workforce Data Report;AAMC,2021
2. 2022 Physician Specialty Data Report;AAMC,2022
3. Synthetic difference-in-differences;Arkhangelsky;Amer. Econ. Rev.,2021
4. Difference-in-differences with multiple time periods;Callaway;J. Econometrics,2021
5. The Complexities of Physician Supply and Demand: Projections From 2019 to 2034;IHS Markit Ltd.,2021