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Häkkinen, A., H. Kautiainen, P. Hannonen, J. Ylinen, H. Mäkinen, a T. Sokka. Muscle Strength, Pain, and Disease Activity Explain Individual Subdimensions of the Health Assessment Questionnaire Disability Index, Especially in Women With Rheumatoid Arthritis. BMJ Group, 2006.

Häkkinen, A., et al. Muscle Strength, Pain, and Disease Activity Explain Individual Subdimensions of the Health Assessment Questionnaire Disability Index, Especially in Women With Rheumatoid Arthritis. BMJ Group, 2006.