1 Department of Medicine and Surgery, University of Insubria, Varese, Italy; Department of Gynecology and Obstetrics, Del Ponte Hospital, Varese, Italy. Electronic address: antonella.cromi@uninsubria.it.
2 Department of Gynecology and Obstetrics, Del Ponte Hospital, Varese, Italy.
3 Department of Pediatric Radiology and Neuroradiology, V. Buzzi Children's Hospital, Milan, Italy.
4 Department of Medicine and Surgery, University of Insubria, Varese, Italy; Department of Gynecology and Obstetrics, Del Ponte Hospital, Varese, Italy.