Volume 42, December 2012, December 2012, Pages 33-49
Eman Elsayed; Fatma Abdel-Aziz; Mai Shafik
Volume 39, June 2011, June 2011, Pages 29-47
Sara El-kabbany; Samir Ibrahim; Ahmed Salama; Heba Shalaby; Fatma Abdel-Aziz