GNRH1 and ovarian hyperstimulation syndrome: They concluded that although GnRH antagonist protocol led to less OHSS occurrence but also lower ongoing pregnancy rate (OPR) when compared with standard long agonist protocol in general population, the fact that 1 in 40 reduction of OHSS occurrence costed 1 in 28 reduction of ongoing pregnancy was not convincing enough for us to make the decision of changing the GnRH analogs from agonist to antagonist in the general population.