Increase in burnout among physicians and associated factors in the period before and during the COVID-19 pandemic - Prestes, Renilda Martins; Drager, Luciano Ferreira; Conway, Silvia Goncalves; Tavares Junior, Almir Ribeiro; Assis, Márcia; Rego, Andrea Frota Bacelar; Moreno, Claudia Roberta de Castro (Revista Brasileira de Medicina do Trabalho, 2025)