1. Andrology Unit Department of Experimental and Clinical Biomedical Sciences University of Florence Florence Italy
2. Department of Human Genetics Radboud University Nijmegen Medical Centre Nijmegen The Netherlands
3. Department of Biomedicine, Metabolism and Neural Sciences University of Modena and Reggio EmiliaModena Italy
4. Azienda USL di Modena, NOCSAE Modena Italy
5. Institute of Human Genetics University of Münster Münster Germany