Chutiyami, M., Bello, U., Salihu, D., Ndwiga, D., Kolo, M., Maharaj, R., Naidoo, K., Devar, L., Pratitha, P. & Kannan, P. 2022, 'COVID-19 pandemic-related mortality, infection, symptoms, complications, comorbidities, and other aspects of physical health among healthcare workers globally: an umbrella review', International Journal of Nursing Studies, 129, article no: 104211. https://doi.org/10.1016/j.ijnurstu.2022.104211