@book{9257,
	author = {Hulley, Stephen B.},
	title = {Diseño de estudios clinicos /},
	publisher = {Wolters Kluwer Health,},
	year = {2014.},
	address = {Barcelona :},
	edition = {4a ed.},
	note = {Incluye indices \ Traducción de: Designing clinical research.}
}