Estimating Vaccine Effectiveness Against Hospitalized Influenza During Pregnancy: Multicountry Protocol for a Retrospective Cohort Study.
Allison L NalewaySarah BallJeffrey C KwongBrandy E WyantMark A KatzAnnette K ReganMargaret L RussellNicola P KleinHannah ChungKimberley A SimmondsEduardo Azziz-BaumgartnerBecca S FeldmanAvram LevyDeshayne B FellSteven J DrewsShikha GargPaul V EfflerNoam BardaStephanie A IrvingPatricia ShifflettMichael L JacksonMark G ThompsonPublished in: JMIR research protocols (2019)
DERR1-10.2196/11333.