1. Department of General, Endocrine and Transplant Surgery, Medical University of Gdansk, 17 Smoluchowskiego Street, 80-211 Gdańsk, Poland
2. Department of Gynecology, Gynecological Oncology and Endocrinological Gynecology, Medical University of Gdansk, 1A Kliniczna Street, 80-402 Gdańsk, Poland
3. Department of Neonatology, Medical University of Gdansk, 1A Kliniczna Street, 80-402 Gdańsk, Poland