[1] Canterbury Christ Church Univ Medway Campus, Rheumatol, Gillingham, England
[2] Tanta Univ, Rheumatol & Rehabil, Tanta, Egypt
[3] Ain Shams Univ, Community & Publ Hlth, Cairo, Egypt
[4] Ain Shams Univ, Rheumatol & Rehabil, Cairo, Egypt
[5] Assiut Univ, Rheumatol & Rehabil, Assiut, Egypt
[6] Benha Univ, Rheumatol & Rehabil, Banha, Egypt
[7] Zagazig Univ, Rheumatol & Rehabil, Zagazig, Egypt
[8] Kasr Elainy Cairo Univ, Rheumatol & Rehabil, Cairo, Egypt
[9] Tanta Univ, Rheumatol & Rehabil, Tanta, Egypt
[10] Fayoum Univ, Rheumatol & Rehabil, Al Fayyum, Egypt
[11] Mansoura Rheumatol & Rehabil, Mansoura, Egypt
[12] Minia Univ, Rheumatol & Rehabil, Al Minya, Egypt
[13] Suez Canal Univ, Rheumatol & Rehabil, Ismailia, Egypt
[14] Alexandria Univ, Ophthalmol, Alexandria, Egypt