title: Underpowered studies (Br J Surg 2002; 89: 129-31).
authors.forename: S
authors.initials: S
authors.lastname: Balasubramanian
mesh_terms: D002986:Clinical Trials as Topic / Q000592:standards*; D003362:Cost-Benefit Analysis; D015201:Meta-Analysis as Topic; D012680:Sensitivity and Specificity