@article{article117906b7,
title   = {Longitudinal reference ranges for fetal ultrasound biometry in twin pregnancies},
author = {Liao, Adolfo Wenjaw and Brizot, Maria de Lourdes and Kang, Helenice Júlio and Assunção, Renata Almeida and Zugaib, Marcelo},
year = {2012},
doi = {10.6061/clinics/2012(05)08},
journal   = {Clinics}
}