So, S., Wang, T. Q., Yu, B. E. and Malvankar-Mehta, M. S. (2023) “The Psychological Impact of the COVID-19 Pandemic on Frontline Healthcare Workers. A Systematic Review and a Meta-Analysis”, European Journal of Mental Health, 18, e0003, pp., 1–22. doi: 10.5708/EJMH.18.2023.0003.