@book{528698,
	author = {Stead, L.F. and et al.},
	title = {Group behaviour therapy programmes for smoking cessation (Review)},
	publisher = {Cochrane Library},
	year = {2017},
	address = {Londres},
	url = {http://onlinelibrary.wiley.com/doi/10.1002/14651858.CD001007.pub3/epdf}
}