Kaluarachchi, A; Wijeratne, S; Lankeshwara, D; Nishantha, LMC; Nelson, C; Wijemanne, S; Senevirathne, HR .Study on the outcome of Transfer of Frozen Thawed Embryos in Artificially Prepared Cycles with or Without Prior Gonadotrophin Releasing Hormone agonist treatment.14th world congress on In-vitro Fertilization & 3rd World Congress on In Vitro Maturation,Montereal (Canada) September 15 – 19,2007