Potential anti-COVID-19 agents, cepharanthine and nelfinavir, and their usage for combination treatment - Ohashi, H; Watashi, K; Saso, W; Shionoya, K; Iwanami, S; Hirokawa, T; Shirai, T; Kanaya, S; Ito, Y; Kim, K S; Nomura, T; Suzuki, T; Nishioka, K; Ando, S; Ejima, K; Koizumi, Y; Tanaka, T; Aoki, S; Kuramochi, K; Suzuki, T; Hashiguchi, T; Maenaka, K; Matano, T; Muramatsu, M; Saijo, M; Aihara, K; Iwami, S; Takeda, M; McKeating, J A; Wakita, T (iScience, 2021)