Umbilical artery waveforms analysis in normal and intrauterine growth-retarded fetuses: a comparison between the pulsatility index (PI) and the relative flow index (R).
作者信息
Hung J H, Ng H T, Shu L P, Pan Y P
出版信息
Zhonghua Yi Xue Za Zhi (Taipei). 1988 Nov;42(5):345-52.