Diagnosis of growth hormone (GH) deficiency in adults with hypothalamic-pituitary disorders: comparison of test results using pyridostigmine plus GH-releasing hormone (GHRH), clonidine plus GHRH, and insulin-induced hypoglycemia as GH secretagogues - Hoeck, H C; Vestergaard, P; Jakobsen, P E (J Clin Endocrinol Metab, 2000)
et al.