0864-0289 0864-0289 S0864-02892021000300005 Cuba 00 09 2021 00 09 2021 37 3 1 2017 33 S1 S1 2 2020 36 3 World Health Organization 2020 4 2020 5 Grupo de Bancos de Sangre 2011 6 World Health Organization 2013 1 7 2003 139 ^s3 ^s3 3 151-4