Reference ranges of filling time and systolic-to-diastolic time index of the left ventricle, right ventricle, and interventricular septum using both spectral and tissue Doppler of fetal heart between 20 and 36 + 6 weeks of gestation - Peixoto, Alberto Borges; Bravo-valenzuela, Nathalie Jeanne; Martins, Wellington de Paula; Mattar, Rosiane; Moron, Antonio Fernandes; Pares, David Baptista da Silva; Tonni, Gabriele; Araujo Júnior, Edward (European Journal of Obstetrics & Gynecology and Reproductive Biology, 2020)