Scopus
Portuguese
Web of science
Sample (material)
Coronavirus disease 2019 (COVID-19)
Systematic review
Pandemic
Service (business)
Health care
MEDLINE
Scientific literature
Business
Psychology
Nursing
Medicine
Political science
Marketing
Paleontology
Philosophy
Linguistics
Chemistry
Disease
Chromatography
Pathology
Infectious disease (medical specialty)
Law
Biology
