POMC and Hypoglycemia: (1) Basal ACTH (pg/mL), and (2) cortisol (μg/dL) (3) ACTH, and (4) cortisol during hypoglycemia (5) ACTH, and (6) cortisol 30 min after hypoglycemia (7) ACTH, and (8) cortisol increase during ITT