title: Flawed external validation study of the ADNEX model to diagnose ovarian cancer.
authors.affiliation: KU Leuven, Department of Development and Regeneration, Leuven, Belgium; Department of Public Health, Erasmus MC, Rotterdam, The Netherlands.
authors.forename: B
authors.initials: B
authors.lastname: Van Calster
authors.affiliation: Department of Public Health, Erasmus MC, Rotterdam, The Netherlands.
authors.forename: E W
authors.initials: EW
authors.lastname: Steyerberg
authors.affiliation: KU Leuven, Department of Development and Regeneration, Leuven, Belgium; Department of Obstetrics and Gynecology, University Hospitals Leuven, Leuven, Belgium; Queen Charlotte's & Chelsea Hospital, Imperial College London, London, UK.
authors.forename: T
authors.initials: T
authors.lastname: Bourne
authors.affiliation: KU Leuven, Department of Development and Regeneration, Leuven, Belgium; Department of Obstetrics and Gynecology, University Hospitals Leuven, Leuven, Belgium.
authors.forename: D
authors.initials: D
authors.lastname: Timmerman
authors.affiliation: Centre for Statistics in Medicine, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK.
authors.forename: G S
authors.initials: GS
authors.lastname: Collins