Puliyel, Ashish CUSUM for monitoring competency: computer software is useful for bootstrapping and real-time CUSUM plotting. [electronic resource] - The British journal of ophthalmology Feb 2011 - 295-6 p. digital Publication Type: Comment; Letter ISSN: 1468-2079 Standard No.: 10.1136/bjo.2010.188805 doi Subjects--Topical Terms: Cataract Extraction--educationClinical Competence--standardsEducation, Medical, Graduate--methodsHumansLearning CurveOphthalmology--educationSoftware