Safety, tolerability, and immunogenicity after 1 and 2 doses of zoster vaccine in healthy adults =60 years of age.
Vermeulen JN, Lange JM, Tyring SK, Peters PH, Nunez M, Poland G, Levin MJ, Freeman C, Chalikonda I, Li J, Smith JG, Caulfield MJ, Stek JE, Chan IS, Vessey R, Sch?del FP, Annunziato PW, Schlienger K, Silber JL. Safety, tolerability, and immunogenicity after 1 and 2 doses of zoster vaccine in healthy adults =60 years of age. Vaccine. 2012 Jan 20; 30(5):904-10.