Development and implementation of a COVID-19 convalescent plasma program in a middle-income economy oleh Gustavo de Carvalho Duarte, Vivian Simoni, Glaciano Nogueira Ribeiro, Ricardo Haddad, Mariangela Moschen, Rodrigo Spessotto Morais Toledo, Maria Angela Pignata Ottoboni, Alfredo Mendrone-Junior, Dante Mario Langhi