Thema
Journal Article
3
Meta-Analysis
2
COVID-19
1
Healthcare worker
1
Hospital admission
1
Letter
1
Mortality
1
Periodontal disease
1
Personal protection equipment
1
Prevention
1
Respiratory virus
1
SARS-CoV-2
1
Severity
1
Smoking
1
Systematic Review
1
Systematic review
1
colorectal cancer
1
incidence
1
meta-analysis
1