@book{20772,
	author = {Petitti, Diana B.},
	title = {Meta-analysis, desicion analysis, and cost-effectivesness analysis  },
	publisher = {Oxford University},
	year = {2000},
	series = {Monographs in Epidemiology and Biostatistcs},
	address = {Nueva York (Estados Unidos)},
	edition = {Segunda edición}
}