TY  - RPRT
TI  - Open access echocardiography.
AU  - E Calvo Corbella
AU  - J J Rodriguez Alonso
AU  - C Quintana Luzón
AU  - M Gonzalez
PY  - 1995
DO  - 10.1136/bmj.311.7002.453b
UR  - https://pubmed.ncbi.nlm.nih.gov/7640609/
ID  - 7640609
ER  -