@book{2218,
	author = {Cohen, Jeffrey A. and Rudick , Richard A.(Editor)},
	title = {Multiple sclerosis therapeutics },
	publisher = {Cambridge university ,},
	year = {2011 .},
	address = {New York :},
	edition = {4th ed.},
	url = {https://books.google.com.pk/books?id=LxQkUu2tfXcC&printsec=frontcover&dq=Multiple+sclerosis+therapeutics&hl=en&sa=X&redir_esc=y#v=onepage&q=Multiple%20sclerosis%20therapeutics&f=false}
}