Long COVID among the first three waves of COVID-19 in Japan: a multicentre cohort study by Yasunori Sato, Katsunori Masaki, Takanori Asakura, Kengo Nagashima, Koichi Fukunaga, Makoto Ishii, Ichiro Kawada, Takashi Ishiguro, Akiko Fujiwara, Daisuke Arai, Shotaro Chubachi, Ho Namkoong, Hideki Terai, Satoshi Okamori, Keiko Ohgino, Kengo Otsuka, Naoki Miyao, Toshio Odani, Rie Baba, Ichiro Nakachi, Naota Kuwahara, Hatsuyo Takaoka, Mayuko Watase, Jun Miyata, Gaku Hiruma, Noriyuki Ishida, Takenori Okada, Taisuke Isono

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Comprehensive and long-term surveys of COVID-19 sequelae in Japan, an ambidirectional multicentre cohort study: study protocol by Takanori Kanai, Yasunori Sato, Keigo Kobayashi, Katsunori Masaki, Fumitake Saito, Atsushi Kumanogoh, Toru Takebayashi, Yuko Kitagawa, Kazuo Tsubota, Kazuno Negishi, Koichi Fukunaga, Hajime Tabuchi, Masaru Mimura, Naoto Minematsu, Yoshito Takeda, Hirofumi Kamata, Makoto Ishii, Naoki Hasegawa, Keita Masuzawa, Shinnosuke Ikemura, Ichiro Kawada, Tadashi Manabe, Hiroyuki Yasuda, Hiroki Kabata, Eisuke Shimizu, Daisuke Ito, Saeko Takahashi, Shigeto Shimmura, Ho Lee, Takashi Ishiguro, Ryuya Edahiro, Akira Umeda, Toshiro Sato, Rei Goto, Shotaro Chubachi, Naoki Miyazaki, Jin Nakahara, Masaki Okamoto, Yoshitaka Oyamada, Kensuke Nakagawara, Ho Namkoong, Hideki Terai, Takae Tanosaki, Kyoko Shimamoto, Hiromu Tanaka, Satoshi Okamori, Yoshiki Ishibashi, Sei Harada, Takanori Fujita, Shogyoku Bun, Sho Kanzaki, Keitaro Fukuda, Jun Yamagami, Toshiyuki Hirano, Takashi Inoue, Junko Kagyo, Tetsuya Shiomi, Keiko Ohgino, Koichi Sayama, Kengo Otsuka, Naoki Miyao, Toshio Odani, Sohei Nakayama, Yusuke Suzuki, Rie Baba, Ichiro Nakachi, Naota Kuwahara, Shuko Mashimo, Soichiro Ueda, Yohei Funatsu, Hidefumi Koh, Takashi Yoshiyama, Kota Ishioka, Morio Nakamura, Ai Goto, Norihiro Harada, Yu Kusaka, Yasushi Nakano, Kazumi Nishio, Hiroki Tateno, Nobuhiro Kodama, Kazuto Hagimura, Ryo Takemura, Kaoru Ogawa, Masayuki Amagai, Yoko Ibuka

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