TY  - RPRT
TI  - [Indications for echocardiography].
AU  - H P Krayenbühl
AU  - J Turina
PY  - 1977
DO  - 10.1055/s-0028-1104956
UR  - https://pubmed.ncbi.nlm.nih.gov/880880/
ID  - 880880
ER  -