title: Response to letter by Berger: The success of masking should be tested routinely and correctly.
authors.affiliation: Biometry Research Group, National Cancer Institute, 9609 Medical Center Drive, Rockville, MD 20850, USA; University of Maryland Baltimore County, Baltimore, MD 20850, USA. Electronic address: vb78c@nih.gov.
authors.forename: Vance W
authors.initials: VW
authors.lastname: Berger
mesh_terms: D030881:Disclosure; D006801:Humans; D011642:Publications / Q000592:standards*; D016032:Randomized Controlled Trials as Topic / Q000379:methods*