The frequency of pulsatile luteinizing hormone-releasing hormone treatment and luteinizing hormone and follicle-stimulating hormone secretion in women with amenorrhea of suprapituitary origin**Supported by a grant from the Foundation for Medical Research (MEDIGON), which is subsidized by the Netherlands Organization for the Advancement of Pure Research (ZWO).††Presented in part at the Sixth Reinier de Graaf Symposium, Nijmegen, The Netherlands, August 27 to 29, 1987.