1. Service of Biochemistry and Molecular Genetics, CDB , Hospital Clínic de Barcelona, IDIBAPS , Barcelona , Spain
2. Service of Biochemistry , Clínica Universidad de Navarra , Pamplona , Spain
3. Service of Clinical Biochemistry , Miguel Servet University Hospital , Zaragoza , Spain
4. Laboratory of Biochemistry , San Juan University Hospital , San Juan , Alicante , Spain
5. Service of Clinical Analysis , Hospital Universitario Príncipe de Asturias , Alcalá de Henares , Madrid , Spain
6. Clinical Analsysis Management Unit, Section of Molecular Genetics , Reina Sofía University Hospital , Córdoba , Spain
7. Laboratory , Puerta de Hierro University Hospital , Majadahonda , Madrid , Spain
8. Department of Health Sciences , Universidad Pontificia , Salamanca , Spain
9. Laboratory , Hospital Universitario Virgen del Rocio , Seville , Spain
10. Laboratory , Althaia Xarxa Assitencial Universitària , Manresa , Spain