223 Prenatal diagnosis of trisomy 21-the role of aberrant right subclavian artery (ARSA) As an ultrasound marker. (March 2022) - Psarris,; Antsaklis, P.; Theodora, M.; Sindos, M.; Asimakopoulos, G.; Tasias, K.; Rodolakis, A.; Daskalakis, G.