From the date of the first dose of this drug until 40 weeks after the date of the last dose (64 weeks if 4 doses are administered 8 weeks apart).~For patients who discontinue treatment with this drug during the observation period, necessary variables will be examined until 40 weeks after the last dose of this drug during the observation period and recorded in the case report forms (CRF).
This study is a multicenter observational study with a central registration system and all-case surveillance system without a control group.