title: A time series evaluation of the in vivo effect of letrozole on  gene expression in breast cancer.
authors.affiliation: Laboratoire JC Heuson de Recherche Translationnelle en Cancérologie Mammaire, Université Libre de Bruxelles, Boulevard de Waterloo, 121-1000 Bruxelles, Belgium.
authors.forename: Debora
authors.initials: D
authors.lastname: Fumagalli
authors.forename: Stefan
authors.initials: S
authors.lastname: Michiels
authors.forename: Christos
authors.initials: C
authors.lastname: Sotiriou