Design and Rationale of the Niigata Cardiovascular Disease Registry Using Linked Administrative and Clinical Data (Nicardia)Shinya Fujiki, Hayao Ikesugi, Akari Hagiwara, Minoru Takahashi,Tsuyoshi Yoshida,Kazuyoshi Takahashi, Asako Tomii, Takashi Saikawa, Yasushi Miyakita, Yuichi Nakamura, Makoto Tomita, Toshio Yamaguchi, Keisuke Suzuki,Shunsuke Imai, Toru Ida, Katsuharu Hatada, Satoru Abe, Masataka Arita,Ryohei Sakai, Hiromi Kayamori,Tsugumi Takayama,Takeshi Kashimura,Yiwei Ling,Shujiro Okuda,Haruna Miyazawa,Takahiro Tanaka,Hirohito Sone,Takayuki Inomata