[1] Univ Calif San Diego, Howard Hughes Med Inst, Neurogenet Lab, Dept Neurosci & Pediat, La Jolla, CA 92093 USA
[2] Casa Sollievo Sofferenza Hosp, Casa Sollievo Sofferenza Mendel Inst, Rome, Italy
[3] G Annunzio Univ Fdn, Dept Biomed Sci, Ctr Studi Invecchiamento, Chieti, Italy
[4] G Annunzio Univ Fdn, Aging Res Ctr, Ctr Studi Invecchiamento, Chieti, Italy
[5] Washington Univ, Sch Med, Dept Internal Med, Div Hematol, St Louis, MO 63110 USA
[6] United Arab Emirates Univ, Fac Med & Hlth Sci, Dept Pediat, Al Ain, U Arab Emirates
[7] United Arab Emirates Univ, Fac Med & Hlth Sci, Dept Pathol, Al Ain, U Arab Emirates
[8] Univ Szeged, Dept Pediat, Szeged, Hungary
[9] Sultan Qaboos Univ, Coll Med, Al Khoud, Oman
[10] Natl Res Ctr, Dept Clin Genet, Cairo, Egypt
[11] Natl Res Ctr, Med Mol Genet Dept, Human Genet & Genome Res Div, Cairo, Egypt
[12] Istanbul Univ, Istanbul Fac Med, Istanbul, Turkey
[13] Bambino Gesu Childrens Res Hosp, Mol Med Unit, Dept Lab Med, Rome, Italy
[14] Univ Childrens Hosp Zurich, Dept Paediat Neurol, Zurich, Switzerland
[15] Dept Child Neurol & Psychiat, Pavia, Italy
[16] Univ Calif San Diego, Dept Med, Div Endocrinol & Metab, La Jolla, CA 92093 USA
[17] Univ Libre Bruxelles, IRIBHM, IBMM, Gosselies, Belgium
[18] Univ Roma La Sapienza, Dept Expt Med, I-00185 Rome, Italy
[19] Univ Messina, Dept Med & Surg Paediat Sci, Messina, Italy