In silico investigation on the inhibiting role of nicotine/caffeine by blocking the S protein of SARS-CoV-2 versus ACE2 receptor - Mohammadi, S; Heidarizadeh, M; Entesari, M; Esmailpour, A; Esmailpour, M; Moradi, R; Sakhaee, N; Doustkhah, E (Microorganisms, 2020)