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Hayashi, Yuki, Kohei Wagatsuma, Masanori Nojima, Tsukasa Yamakawa, Tadashi Ichimiya, Yoshihiro Yokoyama, Tomoe Kazama, Daisuke Hirayama, και Hiroshi Nakase. "The Characteristics of Gastrointestinal Symptoms in Patients With Severe COVID-19: A Systematic Review and Meta-analysis." J Gastroenterol 2021.

Hayashi, Yuki, et al. "The Characteristics of Gastrointestinal Symptoms in Patients With Severe COVID-19: A Systematic Review and Meta-analysis." J Gastroenterol 2021.