[1] CHU Rennes, Serv Biol Reprod CECOS, F-35000 Rennes, France
[2] Inst Rech Sante, Environm & Travail IRSET UMR S 1085, F-35000 Rennes, France
[3] Univ Rennes 1, CNRS UMR 6226, Inst Sci Chim Rennes, Ave Gen Leclerc, F-35042 Rennes, France
[4] Univ Catania, Dipartimento Fis & Astron Ettore Majorana, Via Santa Sofia 64, I-95123 Catania, Italy
[5] Univ Rennes, UMS 3480, US S 018, BIOSIT,CNRS,INSERM, F-35000 Rennes, France