The original article reported by Dr. Imai was published in J Med Virol. 「Antibody response patterns in COVID-19 patients with different levels of disease severity-Japan.」Imai K, Kitagawa Y, Tabata S, Kubota K, Nagura-Ikeda M, Matsuoka M, Miyoshi K, Sakai J, Ishibashi N, Tarumoto N, Takeuchi S, Ito T, Maesaki S, Tamura K, Maeda T.【PubMed】
