Comparison of gonadotropin-releasing hormone and gonadotropin therapy in male patients with idiopathic hypothalamic hypogonadism**Presented in part at the 31th Meeting of the German Endocrine Society, Münster, Germany, March 4 to 7, 1987 and at the 70th Meeting of the American Endocrine Society, New Orleans, Louisiana, June 8 to 11, 1988.