Clinical and Live Birth Rates After Following Long Antagonist Protocol Versus Classical Antagonist Protocol

Inclusion Criteria: * primary infertility * age 18-39 years; body mass index (BMI) 18-29kg/m2; * regular menstrual cycle of 26-35days, * presumed to be ovulatory; * early follicular- phase serum concentration of FSH within normal limits (1-12 IU/l). Exclusion Criteria: * women with diabetes and other metabolic disease * women with heart disease, QT prolongation,heart failure * elevated liver enzymes, liver failure, hepatitis * women with inflammatory or autoimmune disease * abnormal karyotype; * polycystic ovarian syndrome, * endometriosis stage III/IV; * history of being a 'poor responder', * defined as \>20 days of gonadotrophin in a previous stimulation cycle, or any previous cancellation of a stimulation cycle due to limited follicular response, or development of less than 4 follicles 15 mm in a previous stimulation cycle; history of recurrent miscarriage; severe OHSS in a previous stimula- tion cycle or any contraindication for the use of gonadotrophins.