1 Department of Obstetrics and Gynecology, Chonnam National University Medical School, 264 Seoyang-ro, Hwasun-eup, Jeollanam-do 58128, Republic of Korea.
2 Department of Biochemistry, Chonnam National University Medical School, 264 Seoyang-ro, Hwasun-eup, Jeollanam-do 58128, Republic of Korea.