Letter to the Editor Regarding "Influence of Baseline Physical Activity as a Modifying Factor on COVID-19 Mortality: A Single-Center, Retrospective Study"
1 Postgraduate Program in Epidemiology, Federal University of Pelotas, R. Mal Deodoro, 1160-Centro, Pelotas, RS, 96020-220, Brazil. charleslucenaa@gmail.com.
2 Instituto do Coração (InCor), Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil.
3 Sports Department of the School of Physical Education, Physiotherapy and Occupational Therapy (EEFFTO) of the Federal University of Minas Gerais (UFMG), Belo Horizonte, Brazil.