[1] Canterbury Christ Church Univ, Rheumatol, Canterbury, England
[2] Cairo Univ, Abu Elrish Univ Hosp, Pediat, Cairo, Egypt
[3] Ain Shams Univ, Community & Publ Hlth, Cairo, Egypt
[4] Ain Shams Univ, Rheumatol & Rehabil, Cairo, Egypt
[5] Ain Shams Univ, Radiol, Cairo, Egypt
[6] Assiut Univ, Phys Med Rheumatol & Rehabil, Asyut, Egypt
[7] Benha Univ, Rheumatol & Rehabil, Banha, Egypt
[8] Tanta Univ, Rheumatol & Rehabil, Tanta, Egypt
[9] Zagazig Univ, Rheumatol & Rehabil, Zagazig, Egypt
[10] Sohag Univ, Rheumatol & Rehabil Dept, Sohag, Egypt
[11] Minia Univ Hosp, Al Minya, Egypt
[12] Alexandria Univ, Pediat, Alexandria, Egypt
[13] Benha Univ, Rheumatol Rehabil & Phys Med, Banha, Egypt
[14] Alexandria Univ, Rheumatol Rehabil & Phys Med, Alexandria, Egypt