Romero, J. G. de A. J.; Salles-Neto, F. T. de .; Stuginski-Barbosa, J.; Conti, P. C. R. .; Almeida-Leite, C. M. COVID-19 Pandemic Impact on Headache in Healthcare Workers: A Narrative Review. Headache Med 2021, 12, 75-82.