A Study to Assess Dose-Response, Efficacy (Immunogenicity) and the Safety of GC1109

"Step1: Administer 0.3mL or 0.5mL or 0.1mL or placebo of GC1109 into the deltoid muscle three times every four weeks.~Step2: Administer 1.0mL of GC1109 or placebo of GC1109 into the deltoid muscle three times every four weeks, and once after 24 weeks."