Original Research

Validity, reliability, and responsiveness of a new short Visual Simplified Respiratory Questionnaire (VSRQ©) for health-related quality of life assessment in chronic obstructive pulmonary disease

T Perez, B Arnould, J-M Grosbois, V Bosch, I Guillemin, et al

International Journal of Chronic Obstructive Pulmonary Disease 2009, 4:9-18

Published Date: 11 December 2008