TY  - RPRT
TI  - Re: "A simple, valid step test for estimating maximal oxygen uptake in epidemiologic studies ".
AU  - T Stephens
PY  - 1986
DO  - 10.1093/oxfordjournals.aje.a114303
UR  - https://pubmed.ncbi.nlm.nih.gov/3953556/
ID  - 3953556
ER  -