Affiliation: | (1) Clinical Trial Department, Center for Biological Research, Calle 134 entre 23 y 25, Cubanacan, P.O. Box 6332, Havana, Cuba;(2) Physicochemical Division, Center for Genetic Engineering and Biotechnology, Calle 190 entre 31 y 33, Postal Code 10600 Havana, Cuba;(3) Department of Biologicals, Control Quality Division, Center for Genetic Engineering and Biotechnology, Calle 190 entre 31 y 33, Postal Code 10600 Havana, Cuba |