[1] Gyeongsang Natl Univ, Dept Physiol, Sch Med, Med Res Ctr Neural Dysfunct,Inst Hlth Sci, Jinju 660751, South Korea
[2] Sungkyunkwan Univ, Sch Med, Masan Samsung Hosp, Dept Obstet & Gynecol, Masan, South Korea
[3] Gyeongsang Natl Univ, Dept Anat, Sch Med, Med Res Ctr Neural Dysfunct,Inst Hlth Sci, Jinju 660751, South Korea