Lanz-Luces, J. R.; Aceituno, H.; Quiroz-Bravo, F.; Rodiguez-Flores, F.; Osores-Espinoza, M.; Rigaud, D.; Pérez-Cuesta, D.; Abid, K.; Tobar-Bustamante, A.; Barrancas, A.; Figueroa-Torres, C.; Gutierrez de la Cruz, J.; Burgos-Alarcón, F.; Gómez-Donoso, J. Long-Lasting Brain Fog Is Related With Severity Clusters of Symptoms in COVID-19 Patients. Background: COVID-19 Patients May Experience Lon-Lasting Symptoms from Weeks to Even Months. Aim: To Evaluate Long-Term Cognitive Impairment Based on the Severity. Rev Med Chile 2022, 150.