S.O. Okaiyeto, O.J. Ajanusi, A.K. Sackey and L.B. Tekdek
K.M. Al-Saad, H.I. Al-Sadi and M.O. Abdul-Majeed
Hafidh I. Al-Sadi and Hadeel B. Younis
Mojtaba Taran and Mohamad Izaddoost
Samia H. Abdelrahman and S.M.E. Khogali