14 References

1.
Alison Tse Kawai, Grace M. Lee, Azadeh Shoaibi. Mini-Sentinel CBER/PRISM Surveillance Protocol Influenza Vaccines and Pregnancy Outcome. Version 2.; 2014. https://www.sentinelinitiative.org/studies/vaccines-blood-biologics/influenza-vaccines-and-pregnancy-outcomes-prism
2.
Andrade SE, Davis RL, Cheetham TC, et al. Medication Exposure in Pregnancy Risk Evaluation Program. Matern Child Healt J. 2012;16(7):1349-1354. doi:10.1007/s10995-011-0902-x
3.
Li Q, Andrade SE, Cooper WO, et al. Validation of an algorithm to estimate gestational age in electronic health plan databases: VALIDITY OF GESTATIONAL AGE ALGORITHM. Pharmacoepidem Dr S. 2013;22(5):524-532. doi:10.1002/pds.3407