OP02.10: Sequential axial approach for the routine ultrasound evaluation of the fetal basic anatomy at 11–13 weeks: toward a methodological standardisation. (30th September 2019) - Volpe, N.; Schera, G.; Morganelli, G.; Infranco, A.; Dall'Asta, A.; Muto, B.; Kaihura, C.; Frusca, T.; Ghi, T.