Absent or reversed end-diastolic blood flow in the umbilical artery and abnormal Doppler cerebroplacental ratio--cognitive, neurological and somatic development at 3 to 6 years.
Kutschera J, Tomaselli J, Urlesberger B, Maurer U, Häusler M, Gradnitzer E, Burmucic K, Müller W.
Early Hum Dev. 2002 Oct;69(1-2):47-56. doi: 10.1016/s0378-3782(02)00039-7.