DepartmentofClinicalChemistry,SonderborgSygehus,Sonderborg,Denmark;
DepartmentofOccupationalMedicine,HospitalofAalborg,Aalborg,Denmark;
NotionalEvaluationCentreforToxicologyofFertilityRegalatingDrugs,Shanghai200032,P.R.China;
TheSTENOInstituteofPublicHealth,UniversityofAarhus,Denmark;