Frequency and impact of confounding by indication and healthy vaccinee bias in observational studies assessing influenza vaccine effectiveness: a systematic review

Views
Frequency ...1663

Total Visits Per Month

August 2025September 2025October 2025November 2025December 2025January 2026February 2026
Frequency ...1820631353114

File Visits

Views
28eQJkO6RNNjI.pdf497