EP04.15: Reference range of fetal nasal bone and its role for aneuploidy screening 11+0–13+6 weeks in a Chilean population. (30th September 2019) - Sepúlveda‐Martínez, A.; Zuazagoitia, P.; Muñoz, H.; Silva, M.B.; Guiñez, R.; Figueroa, J.; Rencoret, G.I.; Parra‐Cordero, M.