22. Ulthman I, Nasr F, Kassak K, Masri AF. Systemic lupus erythematosus in Lebanon. Lupus 1999; 8(9): 713-715.
23 .Akbarian M, Faezi ST, Gharibdoost F, shahram F, Nadji A, Jamshidi AR, akhlaghi M, Shafaie N, Akhlaghkhah M and DavachiF. Systemic Lupus Erythematosus in Iran: a udy of 2280 patiens over 33 years. International Journal of Rheumatic Diseases2010;13:374-379.