Submaximal exercise testing in the assessment of interstitial lung disease secondary to systemic sclerosis: reproducibility and correlations of the 6-min walk test
M H Buch, C P Denton, D E Furst, L Guillevin, L J Rubin, A U Wells, M Matucci-Cerinic, G Riemekasten, P Emery, H Chadha-Boreham, P Charef, S Roux, C M Black, J R Seibold
Annals of the Rheumatic Diseases Feb 2007, 66 (2) 169-173; DOI: 10.1136/ard.2006.054866