publicaciones seleccionadas artículo académico Association between physical activity and changes in intestinal microbiota composition: A systematic review 2021-2-1 Epidemiological characterisation of asymptomatic carriers of COVID-19 in Colombia: A cross-sectional study 2020-12-7 comentario Potential negative effects of the free use of chloroquine to manage COVID-19 in Colombia 2020-5-26