Evaluating the effectiveness, impact and safety of live attenuated and seasonal inactivated influenza vaccination: protocol for the Seasonal Influenza Vaccination Effectiveness II (SIVE II) study.
Colin R SimpsonNazir I LoneKimberley KavanaghChris RobertsonJim McMenaminBeatrix von WissmannEleftheria VasileiouChris ButlerLewis D RitchieRory GunsonJürgen SchwarzeAziz SheikhPublished in: BMJ open (2017)
ISRCTN88072400; Pre-results.