IVF twins have similar obstetric and neonatal outcome as spontaneously conceived twins: a prospective follow-up study. - Vasario, Elena; Borgarello, Valentina; Bossotti, Carlotta; Libanori, Enrico; Biolcati, Marilisa; Arduino, Silvana; Spinelli, Rita; Delle Plane, Luisa; Revelli, Alberto; Todros, Tullia (Reproductive BioMedicine Online (Reproductive Healthcare Limited), 2010)