@article{article22168625,
title   = {Reference ranges of Doppler parameters of foetal pulmonary artery segments between 19 and 39 weeks of gestation},
author = {Herren, Helmer and Araújo Júnior, Edward and Martins, Wellington de Paula and Cavalli, Ricardo de Carvalho and Marcolin, Alessandra Cristina and Costa, Fabricio da Silva and Quintana, Silvana Maria and Duarte, Geraldo},
year = {2016},
doi = {10.3109/14767058.2014.987119},
journal   = {Journal of Maternal-Fetal and Neonatal Medicine}
}