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2. Intramuscular versus vaginal administration of progesterone for luteal phase support after in vitro fertilization and embryo transfer. A comparative randomized study;Abate;Clinical and Experimental Obstetrics and Gynecology,1999
3. Prospective randomized study comparing luteal phase support for ICSI patients up to the first ultrasound compared with an additional three weeks;Aboulghar;Human Reproduction,2008
4. Luteal phase hormone levels after in vitro fertilization and embryo transfer (IVF-ET): a prospective randomized trial of human chorionic gonadotropin (hCG) vs. intramuscular (im) progesterone (P) for luteal phase support following stimulation with gonadotropin-releasing hormone agonist (GnRH-a) and human menopausal gonadotropins (hMG) [abstract];Albert,1991
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