Correction to: Mixed Meal and Intravenous L-Arginine Tests Both Stimulate Incretin Release Across Glucose Tolerance in Man: Lack of Correlation with β Cell Function by Ruetten H, MD, PhD, Gebauer M, PhD, Raymond RH, MS, Calle RA, MD, Cobelli C, PhD, Ghosh A, PhD, Robertson RP, MD, Shankar SS, MD, Staten MA, MD, Stefanovski D, PhD, Vella A, MD, Wright K, MS, and Fryburg DA, MD; on behalf of the Foundation for the NIH Biomarkers Consortium Beta Cell Project Team Metab Syndr Relat Disord 2018;16:406-415 DOI 10.1089/met.2018.0022