1. Faculty of Health Science; Charlotte Maxeke Johannesburg Academic Hospital; University of the Witwatersrand and NHLS; Johannesburg South Africa
2. Centro de Pesquisa Clinica; HEMORIO - Instituto Estadual de Hematologia Arthur de Siqueira Cavalcanti; Rio de Janeiro Brazil
3. Department of Haematology & Centre for Stem Cell Research; Christian Medical College; Vellore India