Luteal phase support Chairpersons: E. Bosch, Spain & J.L. Caballero, Spain The need of luteal phase support in ART K. Diedrich (Germany) Gonadotropin-releasing hormone (GnRH) agonist in IVF J. Tesarik (Spain) Gonadotropin-releasing hormone (GnRH) analogues in intrauterine insemination (IUI) cyclesJ.G. Velasco (Spain) The use of corticosteroids, aspirin, naloxone, ascorbic acid and other drugs P. B