Institution: | 1. Unit of Medical Genetics, S. Maria della Scaletta Hospital, Imola, Italy;2. Cytogenetic Laboratory, Unit of Obstetrics and Gynaecology, St. Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy;3. Unit of Medical Genetics, St. Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy |