Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2011.1032.1033KholifAbd El-Kader Mahmoud1220111422Not Available]]>Chong, A.K., J. Chang and J.C. Go,20091445984605Gaida, J.E. and J. Cook,201110255270Guest, D.J., M.R.W. Smith and W.R. Allen,201042636642Kraus, K.H. and C. Kirker-Head,200635232242Kim, K., A. Doi, B. Wen, K. Ng and R. Zhao et al.,2010467285290Sharma, P. and N. Maffulli,200587187202Sharma, P. and N. Maffulli,20066181190Watts, A.E., A.E. Yeager, O.V. Kopyov and A.J. Nixon,20112011Abate, M., K.G. Silbernagel, C. Siljeholm, A. Di Iorio and D. De Amicis et al.,20092009