Subjects: PUBLIC health surveillance; COVID-19; IMMUNOGLOBULINSENGLAND
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Subjects: PUBLIC health surveillance; SARS-CoV-2; COVID-19ENGLAND
Subjects: FLAVORING essences; ELECTRONIC cigarettes; CONFIDENCE intervalsCANADA; ENGLAND; UNITED States
Subjects: FLAVORING essences; ELECTRONIC cigarettes; SMOKING cessationENGLAND; CANADA; UNITED States
Subjects: AUTHORITY; CONFIDENCE intervals; DEATHUNITED Kingdom; WALES; ENGLAND
Subjects: CONDITION of the Working Class in England, The (Book); ENGELS, Friedrich, 1820-1895
Subjects: SURVEYS; AGE distribution; ASTHMAUNITED States; ENGLAND
Subjects: HUMAN trafficking; CONFIDENCE intervals; HEALTH status indicatorsENGLAND
Subjects: AGE distribution; CHRONIC diseases; COMPARATIVE studiesBRAZIL; ENGLAND
Subjects: HEALTH care reform; HYPOTHESIS; CONFIDENCE intervalsMASSACHUSETTS