TY  - RPRT
TI  - Mitral valve prolapse. Evolution and refinement of diagnostic techniques.
AU  - J K Perloff
AU  - J S Child
PY  - 1989
DO  - 10.1161/01.cir.80.3.710
UR  - https://pubmed.ncbi.nlm.nih.gov/2670319/
ID  - 2670319
ER  -