Correction: SNOMED CT Concept Hierarchies for Computable Clinical Phenotypes From Electronic Health Record Data: Comparison of Intensional Versus Extensional Value Sets

Ling Chu   ¹ , MD ;   Vaishnavi Kannan   ¹ , MS ;   Mujeeb A Basit   ¹ , MD, MMSc ;   Diane J Schaeflein   ¹ , BS, MT(ASCP) ;   Adolfo R Ortuzar   ¹ , BS ;   Jimmie F Glorioso   ¹ , MS ;   Joel R Buchanan   ² , MD ;   Duwayne L Willett   ¹ , MD, MS

¹ University of Texas Southwestern Medical Center, Dallas, TX, United States

² University of Wisconsin School of Medicine and Public Health, Madison, WI, United States