Reply: GnRH antagonists vs. long GnRH agonists in IVF: significant flaws in a meta-analysis lead to invalid conclusions. (29th December 2017) - Lambalk, C B; Banga, F R; Huirne, J A; Toftager, M; Pinborg, A; Homburg, R; van der Veen, F; van Wely, M