TY  - RPRT
TI  - Incremental threshold loading: a standard protocol and establishment of a reference range in naive normal subjects.
AU  - P H Johnson
AU  - A J Cowley
AU  - W J Kinnear
PY  - 1997
DO  - 10.1183/09031936.97.10122868
UR  - https://pubmed.ncbi.nlm.nih.gov/9493675/
ID  - 9493675
ER  -