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
2002 ◽
Vol 166
(5)
◽
pp. 680-685
◽
2007 ◽
Vol 135
(9-10)
◽
pp. 547-553
◽
2011 ◽
Vol 26
(2)
◽
pp. 219-227
◽
2020 ◽
Vol 103
(4)
◽
pp. 682-692
◽