Çalışkan, Eray, and Ender Yalçınkaya. “Empty Follicle or Not? A Case Report”. Gynecology Obstetrics & Reproductive Medicine 16, no. 2 (August 10, 2010): 112–114. Accessed April 19, 2024. https://www.gorm.com.tr/index.php/GORM/article/view/350.