Safety and efficacy of the Russian COVID-19 vaccine: more information needed by Bucci, E, Andreev, K, Björkman, A, Calogero, RA, Carafoli, E, Carninci, P, Castagnoli, P, Cossarizza, A, Mussini, C, Guerin, P, Lipworth, B, Sbardella, G, Stocki, T, Tuosto, L, van Tulleken, C, Viola, A