Imnamkhao, S., Jantasin, B., Chaiwong, C., Muenthaisong, S., Taveekaew, C., Suriya, N. and Promsuan, W. 2023. Lessons Learned from the Tertiary Health Service Systems during Critical COVID-19 Pandemic in the Northeast of Thailand. Journal of Health Systems Research. 17, 3 (Sep. 2023), 473–89.