@book{10050,
	author = {Fathalla, Mahmoud F. ; Fathalla, Mohamed M.F. and World Health Organization. Regional Office for the Eastern Mediterranean.},
	title = {A practical guide for health researchers.},
	publisher = {WHO Regional Office for the Eastern Mediterranean,},
	year = {2004.},
	series = {(WHO Regional Publications, Eastern Mediterranean series ; 30)},
	address = {Cairo : }
}