title: Reply.
authors.affiliation: Department of Clinical and Health Psychology, ISPA-Instituto Universitário de Ciências Psicológicas, Sociais e da Vida, Lisbon, Portugal.
authors.forename: Claudia
authors.initials: C
authors.lastname: Carvalho
authors.affiliation: Program in Placebo Studies, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
authors.forename: Irving
authors.initials: I
authors.lastname: Kirsch
authors.affiliation: Program in Placebo Studies, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
authors.forename: Ted J
authors.initials: TJ
authors.lastname: Kaptchuk