TY  - RPRT
TI  - Exercise as protection against heart attack.
AU  - R S Paffenbarger
AU  - R T Hyde
PY  - 1980
DO  - 10.1056/nejm198005013021810
UR  - https://pubmed.ncbi.nlm.nih.gov/7366610/
ID  - 7366610
ER  -