The immune response to 6-monthly versus annual standard dose inactivated trivalent influenza vaccination in older people: study protocol for a randomised clinical trial.
Barnaby Edward YoungSapna SadaranganiHaur Sen YewChee Fu YungYee Sin LeoMark I-Cheng ChenAnnelies Wilder-SmithPublished in: Trials (2017)
ClinicalTrials.gov, ID: NCT02655874 . Registered on 12 January 2016.