TY  - RPRT
TI  - Six-minute walk test: a valuable test, when properly standardized.
AU  - Thierry Troosters
AU  - Rik Gosselink
AU  - Marc Decramer
PY  - 2002
UR  - https://pubmed.ncbi.nlm.nih.gov/12147012/
ID  - 12147012
ER  -