[1] Vilnius Univ, Inst Clin Med, Clin Obstet & Gynecol,Fac Med, Obstet & Gynecol Resident, Vilnius, Lithuania
[2] Vilnius City Clin Hosp, Dept Gynecol, Gynecol, Vilnius, Lithuania
[3] Vilnius Univ Hosp Santaros Clin, Dept Gynecol, Urogynecol, Vilnius, Lithuania
[4] Vilnius Univ, Inst Clin Med, Clin Obstet & Gynecol, Fac Med, Vilnius, Lithuania
[5] Imperial Coll NHS Trust London, St Marys Hosp, London, England
[6] Med Univ South Carolina, Charleston, SC USA