title: Selection or work-up bias: a recurrent caveat in evaluation of new diagnostic modalities.
authors.forename: Paul E
authors.initials: PE
authors.lastname: Van Schil
mesh_terms: D044963:Biopsy, Fine-Needle / Q000379:methods*; D003937:Diagnosis, Differential; D019160:Endosonography / Q000379:methods*; D006801:Humans; D008175:Lung Neoplasms / Q000175:diagnosis*; D008481:Mediastinoscopy / Q000379:methods*; D015983:Selection Bias; D012680:Sensitivity and Specificity