- Medical Specialization (1994), Zekai Tahir Burak Women's Hospital, Gynecology and Obstetrics
- Medical Doctor (1989), Çukurova University, Gynecology and Obstetrics
- Önalan G.; Amenorrhea assessment. In: Engin Oral editors. John Hopkins gynecology and obstetrics handbook. Istanbul: Güneş medicine; 2008. p.417-428.
- Mülayim B, Çelik N, Önalan G, Zeyneloğlu H, Kuşçu E.; Sublingual misoprostol after surgical management of early termination of pregnancy. , 2009; 92 (2): 678-681. (SCI-Exp: Science Citation Index-Expanded (including SCI))
- Önalan R, Önalan G, Tonguç E, Özdener T, Doğan M, Mollamahmutoğlu L.; Body mass index is an independent is a risk factor for the development of the endometrial polyps in vitro fertilization. fertility & Sterility, 2009; 91 (4): 1056-1060. (SCI-Exp: Science Citation Index-Expanded (including SCI))
- Pabuccu R, Önalan G, Kaya C, Selam B, Ceyhan T, Örnek T.; Efficiency and pregnancy outcome of serial intrauterine device-guided hysteroscopic adhesiolysis of intrauterine sinechiae. Fertility and sterility, 2008; 90 (5): 1973-1977. (SCI-Exp: Science Citation Index-Expanded (including SCI))