Retraction: Psychometric characteristics of the ankylosing spondylitis quality of life questionnaire, short form 36 health survey, and functional assessment of chronic illness therapy-fatigue subscale.
Health Qual Life Outcomes. 2009 Apr 17;7:34. doi: 10.1186/1477-7525-7-34.
Health Qual Life Outcomes. 2009.
PMID: 19374743
Free PMC article.