[1] Univ Siena, S Maria alle Scotte Hosp, Ctr Diag & Treatment Couple Steril, Biol Sect,Dept Biomed Sci, I-53100 Siena, Italy
[2] Univ Siena, Dept Pediat Obstet & Reprod Med, I-53100 Siena, Italy
[3] Univ Siena, Dept Environm Sci G Sarfatti, I-53100 Siena, Italy
[4] Ben Gurion Univ Negev, IL-84105 Beer Sheva, Israel
[5] Barzilai Govt Hosp, Infertil & IVF Unit, Ashqelon, Israel
[6] Univ Siena, Appl Biol Sect, Dept Biomed Sci, I-53100 Siena, Italy