@article {3050,
	title = {Erectile dysfunction among workers occupationally exposed to ammonia },
	journal = {Kasr El-Eini Medical J.},
	volume = {75},
	year = {2007},
	pages = {347-351.},
	author = {Amal El-Safty, and Abdel Maksoud N. and ABDEL HAMID M.}
}
