1 School of Medicine, Vita-Salute San Raffaele University, Milan, Italy; Obstetrics and Gynaecology Department, IRCCS San Raffaele Scientific Institute, Milan, Italy.
2 Pediatric and Adult Congenital Disease Heart Centre, IRCCS Policlinico San Donato, Milano, Italy.
3 School of Medicine, Vita-Salute San Raffaele University, Milan, Italy; Pediatric and Adult Congenital Disease Heart Centre, IRCCS Policlinico San Donato, Milano, Italy.