[1] Univ Antwerp, Dept Med Genet, B-2610 Antwerp, Belgium
[2] Technion Israel Inst Technol, Rambam Med Ctr, Dept Human Genet & Paediat, Haifa, Israel
[3] Technion Israel Inst Technol, Bruce Rappaport Fac Med, IL-31096 Haifa, Israel
[4] Hosp Clin Barcelona, Dept Rheumatol, Barcelona, Spain
[5] Univ Turin, Dept Genet Biol & Biochem, Turin, Italy
[6] Univ Hosp Brussels, Dept Rheumatol, Brussels, Belgium
[7] Univ Aberdeen, Sch Med, Dept Med & Therapeut, Aberdeen AB9 2ZD, Scotland
[8] Univ Hosp Brussels, Dept Med Genet, Brussels, Belgium
[9] Ctr Human Genet, Inst Pathol & Genet, Loverval, Belgium
[10] Univ Antwerp Hosp, Dept Radiol, Antwerp, Belgium