Volume 31, Issue 2, December 2016, Pages 171-175
Ashraf A. Abd El Tawab; Fatma I. El -Hofy; Attia Al-Jeddawy; Ebtehal Abo-Hamdah
Volume 28, Issue 2, June 2015, Pages 163-168
Ashraf A. Abd El Tawab; Fatma I. El -Hofy; Soad S. Belih; Mariam M. El Shemy