1. Department of Clinical Genetics, Leiden University Medical Center, Leiden, The Netherlands;
2. Result Laboratorium, Dordrecht, The Netherlands;
3. Department of Clinical Chemistry, Medlon/Medisch Spectrum Twente, Enschede, The Netherlands;
4. Laboratory of Medical Genetics, National and Kapodistrian University of Athens, Choremeio Research Laboratory, St. Sophia's Children's Hospital, Athens, Greece;
5. Genetic Department, GHU Henri-Mondor, Assistance Publique–Hôpitaux de Paris, UPEC/IMRB - U955 EQ2 and GrEX, Creteil, France; and
6. Red Cell Genetic Disease Unit, GHU Henri-Mondor, Assistance Publique–Hôpitaux de Paris, Université Paris Est/IMRB - U955 EQ2, Créteil, France