Insomnia episodes, new-onset pharmacological treatments, and other sleep disturbances during the COVID-19 pandemic: a nationwide cross-sectional study in Brazilian health care professionals - Drager, Luciano Ferreira; Pachito, Daniela V; Moreno, Claudia Roberta de Castro; Tavares, Almir R; Conway, Silvia G; Assis, Marcia; Sguillar, Danilo A; Moreira, Gustavo A; Bacelar, Andrea; Genta, Pedro R (Journal of clinical sleep medicine, 2022)