title: Blinding or masking.
authors.affiliation: Bern, Switzerland, and Corfu, Greece.
authors.forename: Nikolaos
authors.initials: N
authors.lastname: Pandis
mesh_terms: D004311:Double-Blind Method; D006801:Humans; D015588:Observer Variation; D012107:Research Design; D015983:Selection Bias; D016037:Single-Blind Method