Please select the eligibility criteria that correspond to the clinical trial below.
Title: Effects of Metformin on the Ovarian Response to Gonadotropins for in Vitro Fertilization Treatment in Patients With Polycystic Ovary Syndrome and Predictors of Poor Ovarian Response
Brief Summary: Metformin should be administered with caution and could be potentially dangerous in infertile patients with PCOS who show a poor ovarian response and are undergoing gonadotropin-based ovarian stimulation. However, data that address this point are totally lacking.

On the basis of these considerations, the aim of the current clinical trial was to test the hypothesis that metformin reduces the ovarian response in infertile patients with PCOS who have a potentially poor ovarian response and who undergo gonadotropin stimulation for IVF cycles.


Options:
A: Inclusion Criteria

* Eight or fewer menstrual cycles in the past year or intermenstrual periods of 45 days or longer
* Elevated testosterone level
* Good general health
* Sperm concentration in partner of 20 million/ml or greater
* Ability to have intercourse 2-3 times per week
* One functional fallopian tube and normal uterine cavity
B: Inclusion Criteria:

* PCOS
* Prognosis for poor response
* Infertility

Exclusion Criteria:

* Male factor infertility
* Tubal infertility
C: Inclusion Criteria:

* Women in reproductive age
* With polycystic ovary syndrome defined by hyperandrogenism (elevated serum testosterone concentrations), and oligomenorrhea (cycles of 35 days or longer), or amenorrhea (no menses in the last 6 months) after negative screening pregnancy test

Exclusion Criteria:

* Pregnancy
* Cushing' s syndrome
* Late onset congenital adrenal hyperplasia
* Androgen-secreting tumors
* Uncontrolled thyroid disease
* Hyperprolactinemia
* Diabetes any
* Cardiovascular diseases (Ischaemic heart disease, uncontrolled hypertension, heart failure)
* Acute or chronic infections at baseline
* Renal disease
* Liver disease
* Had taken any medications for at least 3 months before enrolment in the study.
D: Inclusion Criteria:

* Women between the age of 18 and 39 years inclusive.
* Anovulatory infertility of duration at least 12 months.
* Polycystic ovary syndrome, based on Rotterdam consensus criteria.
* Normal serum prolactin, thyroid function and 17-hydroxyprogesterone.
* Normal serum prolactin, thyroid function and 17-hydroxyprogesterone;

Exclusion Criteria:

* Presence of any other significant infertility factor including male factor, known tubal disease or history of an ectopic pregnancy, known endometriosis affecting the fallopian tubes or ovaries.
* Already taking oral hypoglycaemics.
* Diabetics receiving treatment.
* Renal impairment
* Chronic hepatic disease
* Cardiac Disease
* Alcohol dependency
* Pre-disposition to lactic acidosis
* Previous ovarian drilling procedure, gonadotrophin injection therapy, IUI (intrauterine insemination) or IVF ( in vitro fertilisation).
* For those women who have had previous fertility treatment, the following would be excluded:

  * Women who have had \> 5 cycles of clomiphene citrate
  * Women who have had \> 5 months metformin treatment previously
  * Women who have proven to be resistant to 100mg or more of clomiphene citrate.

Answer: B