- Correspondence to Dr Žana Bumbulienė, Clinic of Obstetrics and Gynecology, Vilnius University Faculty of Medicine, Santariskiu str 2, Vilnius LT-08406, Lithuania;
- Received March 17, 2013
- Revised August 8, 2013
- Accepted October 12, 2013
- First published November 4, 2013.
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