TY  - RPRT
TI  - Fetal echocardiography.
AU  - W J Zwiebel
PY  - 1993
DO  - 10.1016/s0887-2171(05)80098-8
UR  - https://pubmed.ncbi.nlm.nih.gov/8217259/
ID  - 8217259
ER  -