TY  - RPRT
TI  - A four-minute submaximal constant work rate exercise test to assess cardiovascular functional class in chronic heart failure.
AU  - R Belardinelli
AU  - Y Y Zhang
AU  - K Wasserman
AU  - A Purcaro
AU  - P G Agostoni
PY  - 1998
DO  - 10.1016/s0002-9149(98)00093-9
UR  - https://pubmed.ncbi.nlm.nih.gov/9604949/
ID  - 9604949
ER  -