Kaluarachchi A, Wijeratne S, Nelson C, W.K.Panagoda, Wijemanne S, Seneviratne H.R  Outcome of transfer of Frozen-Thawed Embryos in Artificially Prepared Cycles with or without prior Gonadotrophin Releasing Hormone Agonist Treatment. 41^st Annual Scientific Sessions- Sri Lanka College of Obstetricians & Gynaecologists – June 2008