TY  - RPRT
TI  - [Difficulties in diagnosing mitral valve prolapse].
AU  - V A Bobrov
AU  - L A Aleksandrova
AU  - A I Frolov
PY  - 1989
UR  - https://pubmed.ncbi.nlm.nih.gov/2711670/
ID  - 2711670
ER  -