[1] Med Ctr Postgrad Educ, Dept Endocrinol, PL-01813 Warsaw, Poland
[2] Med Ctr Postgrad Educ, Dept Obstet & Gynaecol, PL-01813 Warsaw, Poland
[3] Maria Sklodowska Curie Mem Canc Ctr, Head & Neck Canc Dept, Warsaw, Poland
[4] Inst Oncol, Warsaw, Poland