GNRH1 and ovarian hyperstimulation syndrome: A positive consequence of vitrification, along with refined ART treatment protocols, is that ovarian hyperstimulation syndrome (OHSS) can be eradicated by applying ovarian stimulation using a GnRH antagonist (short protocol) with a GnRH agonist to trigger ovulation in combination with a ‘freeze-all’ strategy (Blockeel et al., 2019).