Michael  Hartal, Yavnai, Nirit , Galor, Inbal , Avramovich, Eva , Sela, Tamar , Kayouf, Raeed , Tzurel-Ferber, Anat , Greenberg, Lior J, Halperin, Tami , and Levine, Hagai . 2015. ?Seroprevalence Of Anti-Hbs Antibodies At Young Adulthood, Before And After A Booster Vaccine Dose, Among Medical Personnel Vaccinated In Infancy?. Vaccine, 33, Pp. 4878?4885.