Fatigue and resilience in Master's and PhD students in the Covid-19 pandemic in Brazil: A cross-sectional study. - Valóta, Izabel Alves das Chagas; Rodrigo da Silva Pimentel, Rafael; Neroni Stina Saura, Ana Paula; Marques da Silva, Rodrigo; Siqueira Costa Calache, Ana Lucia; José dos Santos, Marcelo (PLoS ONE, 2023)