1 Department of Hematology for Rare Diseases of Blood and Blood-forming Organs, Regional Reference Laboratory for Screening and Prenatal Diagnosis of Haemoglobinopathies, Hospital "Villa Sofia-Cervello", Palermo, Italy. Electronic address: a.giambona@villasofia.it.
2 Department of Hematology for Rare Diseases of Blood and Blood-forming Organs, Regional Reference Laboratory for Screening and Prenatal Diagnosis of Haemoglobinopathies, Hospital "Villa Sofia-Cervello", Palermo, Italy.