[1] Pochon CHA Univ, Coll Med, Bundang CHA Gen Hosp, Inst Clin Res, Kyonggi Do 463712, South Korea
[2] Pochon CHA Univ, Coll Med, Bundang CHA Gen Hosp, Dept Diagnost, Kyonggi Do 463712, South Korea
[3] Pochon CHA Univ, Coll Med, Bundang CHA Gen Hosp, Dept Obstet & Gynecol, Songnam 463712, South Korea
[4] Pochon CHA Univ, Coll Med, Bundang CHA Gen Hosp, Infertil Med Ctr, Songnam 463712, South Korea
[5] Kongju Natl Univ, Dept Environm Educ, Kong Ju 314701, South Korea
[6] Pochon CHA Univ, Coll Med, Bundang CHA Gen Hosp, Dept Internal Med, Songnam 463712, South Korea