Kazemi A, Ramezanzadeh F, Nasr-Esfahani MH The relations between dietary antioxidant vitamins intake and oxidative stress in follicular fluid and ART outcomes. Iran J Reprod Med. 2015 Sep;13(9):533-40.
La Marca A, Capuzzo M Use of progestins to inhibit spontaneous ovulation during ovarian stimulation: the beginning of a new era? Reprod Biomed Online. 2019 Aug;39(2):321-331. doi: 10.1016/j.rbmo.2019.03.212. Epub 2019 Mar 29.
Martinez F, Rodriguez-Purata J, Clua E, Garcia S, Coroleu B, Polyzos N Ovarian response in oocyte donation cycles under LH suppression with GnRH antagonist or desogestrel progestin: retrospective and comparative study. Gynecol Endocrinol. 2019 Oct;35(10):884-889. doi: 10.1080/09513590.2019.1604662. Epub 2019 May 12.
Massin N New stimulation regimens: endogenous and exogenous progesterone use to block the LH surge during ovarian stimulation for IVF. Hum Reprod Update. 2017 Mar 1;23(2):211-220. doi: 10.1093/humupd/dmw047.
Mikkelsen AL, Lindenberg S Morphology of in-vitro matured oocytes: impact on fertility potential and embryo quality. Hum Reprod. 2001 Aug;16(8):1714-8. doi: 10.1093/humrep/16.8.1714.
Phillips A, Hahn DW, Klimek S, McGuire JL A comparison of the potencies and activities of progestogens used in contraceptives. Contraception. 1987 Aug;36(2):181-92. doi: 10.1016/0010-7824(87)90013-8.
Interventional studies are often prospective and are specifically tailored to evaluate direct impacts of treatment or preventive measures on disease.
Observational studies are often retrospective and are used to assess potential causation in exposure-outcome relationships and therefore influence preventive methods.
Expanded access is a means by which manufacturers make investigational new drugs available, under certain circumstances, to treat a patient(s) with a serious disease or condition who cannot participate in a controlled clinical trial.
Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.
Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.
