Safe use of tocilizumab in pregnant women with Takayasu arteritis: three case studies - Yoshikazu Nakaoka; Nao Konagai; Jun Yoshimatsu; Yoshihiro Nishida; Chizuko Aoki Kamiya; Atsushi Nakanishi; Naoko Iwanaga; Masami Sawada; Aiko Kakigano; Takeshi Kanagawa; Satoshi Eto (RMD Open)