Association between the number of board-certified cardiologists and the risk of in-hospital mortality: a nationwide study involving the Japanese registry of all cardiac and vascular diseases
Kihei Yoneyama, Koshiro Kanaoka, Satoshi Okayama, Kunihiro Nishimura, Michikazu Nakai, Kunihiro Matsushita, Yoshihiro Miyamoto, Keisuke Kida, Yuki Ishibashi, Masaki Izumo, Makoto Watanabe, Tsunenari Soeda, Hiroyuki Okura, Tomoo Harada, Satoshi Yasuda, Toyoaki Murohara, Hisao Ogawa, Yoshihiko Saito, Yoshihiro J Akashi
BMJ Open Dec 2019, 9 (12) e024657; DOI: 10.1136/bmjopen-2018-024657
