Prediction model of severe bronchopulmonary dysplasia using objective indicators: a multicenter prospective cohort study in Japan

Seiichi Tomotaki, Kyoto University Hospital, Kyoto, Kyoto, Japan; Ryosuke Araki, Kyoto University Hospital, Kyoto, Kyoto, Japan; Katsuya Hirata, Osaka Women's and Children's Hospital, Izumi, Osaka, Japan; Katsuaki Toyoshima, Kanagawa children's Medical Center, Yokohama, Kanagawa, Japan; Tetsuya Isayama, National Center for Child Health and Development, Setagaya-ku, Tokyo, Japan; Ryo Ogawa, Nagano Children's Hospital, Azumino, Nagano, Japan; Hiroko Ishii. Iwami, Osaka City General Hospital, Osaka, Osaka, Japan; Toshifumi Ikeda, Aomori Prefectural Central Hospital, Aomori, Aomori, Japan; Hirokazu Arai, Akita Red Cross Hospital, Akita, Akita, Japan; Akari Makidono, Tokyo Metropolitan Children's Medical Center, Fuchu, Tokyo, Japan; Masanori Nishikawa, Osaka Women's and Children's Hospital, Sakai, Osaka, Japan; Mikiko Miyasaka, National Center for Child Health and Development, Setagaya-ku, Tokyo, Japan; Hiroko Hara, Kurashiki　Central　 Hospital, Kurashiki, Okayama, Japan; Yu Hidaka, Kyoto University, Sakyo-ku,Shogoin,Kataharamachi, Kyoto, Japan; Masahiko Kawai, Kyoto University, Kyoto, Kyoto, Japan