Figure 1From: Effect of a 14-day course of systemic corticosteroids on the hypothalamic-pituitary-adrenal-axis in patients with acute exacerbation of chronic obstructive pulmonary disease (a) Cortisol values basal (black) and after stimulation with 1 μg corticotropin (grey) and (b) corresponding basal ACTH concentrations for all patients at six clinical visits.Back to article page