Type No. started No. oocyte retrieval No. transfer No. clinical pregnancies Mean no. oocytes retrieved Mean no. embryos transferred Implantation rate IVF 2,709 2,225 2,519 702 7 1.7 29.3 Tamoxifen 170 147 109 34 3.6 1 25

Table 1: The number of started cycles in regular IVF and Tamoxofen low stimulation, their outcome in relation to oocyte retrieval, clinical pregnancies, mean number of oocyte retrieved and implantation rates in these 2 groups.