OC14.03: Assessment of the head circumference to maternal height ratio close to delivery: any role in the screening of labour dystocia?. Issue Volume 58:Issue S1(2021)Supplement (14th October 2021) - Dall'Asta, A.; Rizzo, G.; Masturzo, B.; Corno, E.; Mappa, I.; Luviso, M.; Roletti, E.; Melandri, E.; Valenti, A.; Chiarelli, A.; Ghi, T.