Correction to: Projecting health labor market dynamics for a health system in transition: planning for a resilient health workforce in Saudi Arabia - Tracy Kuo Lin; Tim A. Bruckner; Taghred Alghaith; Mariam M. Hamza; Mohammed Alluhidan; Christopher H. Herbst; Hussah Alghodaier; Adwa Alamri; Rana Saber; Nahar Alazemi; Jenny X. Liu (BMC, 2021)