Safety and effectiveness of abatacept in Japanese non-elderly and elderly patients with rheumatoid arthritis in an all-cases post-marketing surveillance

Masayoshi Harigai, Naoki Ishiguro, Shigeko Inokuma, Tsuneyo Mimori, Junnosuke Ryu, Syuji Takei, Tsutomu Takeuchi, Yoshiya Tanaka, Yoshinari Takasaki, Hisashi Yamanaka, Yuri Yoshizawa, Ichino Chinen, Toru Nakao, Takao Koike