Please select the eligibility criteria that correspond to the clinical trial below.
Title: Oral Dydrogesterone Versus Vaginal Progesterone Gel in the Luteal Phase Support: Randomized Controlled Trial
Brief Summary: The purpose of this study is to compare efficacy and tolerability of the dydrogesterone and the vaginal progesterone, used for luteal phase support.

(Initial start date was January 2009 but not for patients' recruitment only for paper work, documents, team organization, statistical pre-work actions and to gain the official approval of Institutional Review Board. The recruitment started in October 2010 and continued until October 2013.)


Options:
A: Inclusion Criteria:

\<38 years of age with either primary or secondary infertility for at least 1 years; body mass index between 19 and 30 kg/m2; Day 2 serum FSH \<15 IU/ml; normal serum prolactin level; normal uterine cavity on hysterosalpingography or hysteroscopy.-

Exclusion Criteria:

female partners with previous ovarian surgery, one ovary, polycystic ovaries on ultrasound examination, other endocrine abnormalities (i.e., polycystic ovarian syndrome, thyroid disorders, hyperprolactinemia, hypogonadotropic hypogonadism), diminished ovarian reserve (basal FSH level \>15 IU/mL), or age of \>38 years
B: Inclusion Criteria:

* Women undergoing embryo transfer following controlled ovarian hyperstimulation with a long GnRH agonist protocol, oocyte pick-up and ICSI.
* Embryo transfer performed on day 3.

Exclusion Criteria:

* Participation in another trial that was being conducted in our unit at the same time.
* Preimplantation genetic screening cycles.
* Day 5 embryo transfers.
C: Inclusion Criteria:

* routine ovulation induction protocol with GnRH agonist
* less than three prior IVF cycles
* at least three aspirated oocytes
* BMI \<35 kg/m2
* age \<45 years

Exclusion Criteria:

* history of dysfunctional uterine bleeding
* acute urogenital disease
* recurrent miscarriage
* previous allergic reactions to a progesterone products
D: Inclusion Criteria:

* Patient has given written informed consent;
* BMI \< 30 kg/m2;
* Age 18 - 42 (upon starting COH);
* \<3 prior ART cycles (IVF, ICSI and related procedures);
* Baseline (day 2-3 of cycling) FSH \<15 IU/L and E2 \<80 pg/mL;
* Normal uterine cavity as per recent hysterosalpingogram, sonohysterogram or hysteroscopic exam (i.e. no polyps or protruding submucosal fibroids);
* Patients must have at least three retrieved oocytes.

Exclusion Criteria:

* Intramural uterine fibroids that distort the uterine cavity or polyps \>1 cm;
* Stage III or IV endometriosis (no endometriomas);
* Hydrosalpinges;
* History of past poor response to COH resulting in canceling ART;
* Use of thawed/donated oocytes;
* Use of thawed/donated embryos;
* Gestational carrier;
* Patients affected by pathologies associated with any contraindication of being pregnant;
* Hypersensitivity to study medication;
* Uncontrolled adrenal or thyroid dysfunction;
* History of conditions (i.e. toxic shock syndrome) that would contraindicate use of a vaginal progesterone product;
* History of arterial disease;
* Patients with hepatic impairment (liver function tests \> 2x upper limits of normal);
* Patients with dermatologic disease;
* Patients with renal impairment (estimated creatinine clearance \<60 mL/min/1.73 m2);
* Neoplasias (current) or history of neoplasia that may be responsive to progesterone;
* High grade cervical dysplasia;
* History of recurrent pregnancy loss defined as 3 or more spontaneous miscarriages, wherein pregnancy developed to a minimum of a gestational sac on TVUS;
* Participation in a concurrent clinical trial or in another trial within the past 2 months;
* Use of concomitant medications that might interfere with the study evaluation;
* Pre-implantation genetic diagnosis/screening

Answer: C