1. Pediatric Department, Hospital Sant Joan de Déu de Barcelona; University of Barcelona; Barcelona Spain
2. National Biomedical Research Institute on Epidemiology and Public Health (CIBERESP), Instituto de Salud Carlos III; Madrid Spain
3. Institut de Recerca Pediàtrica Hospital Sant Joan de Déu de Barcelona (IRP-HSJD); Barcelona Spain
4. Pediatric Hematology and Oncology Department, Hospital Sant Joan de Déu de Barcelona; University of Barcelona; Barcelona Spain
5. National Biomedical Research Institute on Rare Diseases (CIBER ER), Instituto de Salud Carlos III; Madrid Spain
6. Hematology Laboratory, Hospital Sant Joan de Déu de Barcelona; University of Barcelona; Barcelona Spain
7. Hematology Molecular Genetics Unit, Hospital Universitari Vall d'Hebron; Barcelona Spain
8. Erythropatology Unit, Hematology Department, Hospital Universitari Vall d'Hebron; Barcelona Spain