SHIMADA, Hideyo, Michiko TAKAHASJI, Shizuo KATAGIRI, Hideo KOBAYASHI, and Kazuru SAITO. 2015. “Clinical Applications of Fetal Echocardiography”. Archives of Acoustics 9 (1-2): 285-95. https://acoustics3.ippt.pan.pl/index.php/aa/article/view/3225.