[1] Christ Church Univ, Canterbury, England
[2] Kings Coll London, London, England
[3] Tanta Univ, Rheumatol & Rehabil, Tanta, Egypt
[4] Cairo Univ, Rheumatol, Giza, Egypt
[5] Benha Univ, Rheumatol & Rehabil, Banha, Egypt
[6] Zagazig Univ, Rheumatol & Rehabil, Zagazig, Egypt
[7] Cairo Univ, Rheumatol & Rehabil, Giza, Egypt
[8] Minia Univ, Pediat Rheumatol, Al Minya, Egypt
[9] Ain Shams Univ, Community Med & Publ Hlth, Cairo, Egypt
[10] Mansoura Univ, Fac Med, Rheumatol, Mansoura, Egypt
[11] Fayoum Univ, Rheumatol & Rehabil, Faiyum, Egypt
[12] Suez Canal Univ, Rheumatol & Rehabil, Ismailia, Egypt
[13] Mansoura Univ, Rheumatol & Rehabil, Mansoura, Egypt
[14] Cairo Univ, Pediat Rheumatol, Giza, Egypt