Kolivand, P., Arabloo, J., Saberian, P., Dorooudi, T., Rajaie, S., Karimi, F., Raei, B., Behzadifar, M., Parvari, A., Ehsanzadeh, S. J., Homayoun, S., Salehbeigi, S., Namdar, P., Azari, S. (2025). Health systems performance in health outcomes, health financing and COVID-19 pandemic: Lessons from 31 countries. PLoS ONE. https://doi.org/10.1371/journal.pone.0334693