T1D Exchange Clinic Network. Severe hypoglycemia and diabetic ketoacidosis in adults with type 1 diabetes: results from the T1D Exchange clinic registry - Weinstock, RS; Xing, D; Maahs, DM; Michels, A; Rickels, MR; Peters, AL; Bergenstal, RM; Harris, B; Dubose, SN; Miller, KM; Beck, RW (J Clin Endocrinol Metab, 2013)