Three-dimensional Doppler evaluation of single spherical samples from the placenta: intra- and interobserver reliability - Martins, W. P.; Lima, J. C.; Welsh, A. W.; Araujo Jr., E.; Miyague, A. H.; Mauad Filho, Francisco; Raine-Fenning, N. J. (Ultrasound in obstetrics and Gynecology, 2012)