Utility of establishing a unified regional database for enhancing academic output and specialist certification in Japan.

Tominaga T, Hashimoto S, Takamura Y, Katayama H, Yamashita M, Noda K, Tei S, Ono R, Ishii M, Hisanaga M, Oishi K, Moriyama M, Uchida F, Shiraishi T, Kunizaki M, Fukuda A, Nonaka T, Matsumoto K