1 Department of Hematology, Centro Hospitalar Vila Nova Gaia, Rua Conceição Fernandes, 4434-502, Vila Nova, Gaia, Portugal.
2 Department of Pathology, Centro Hospitalar Vila Nova Gaia, Porto, Portugal.
3 Department of Hematology, Centro Hospitalar Vila Nova Gaia, Rua Conceição Fernandes, 4434-502, Vila Nova, Gaia, Portugal. marcio.tavares@chvng.min-saude.pt.