@book{901,
	author = {Chow, Shein-Chung, and Liu, Jen-Pei,},
	title = {Design and analysis of clinical trials :},
	publisher = {Wiley-Interscience,},
	year = {c2004.},
	series = {Wiley series in probability and statistics},
	address = {Hoboken, N.J. :},
	edition = {2nd ed.},
	url = {http://www.loc.gov/catdir/bios/wiley044/2004273174.html}
}