Brorsson, Sofia, Anna Nilsdotter, Eja Pedersen, Ann Bremander, and Carina Thorstensson. 2012. “Relationship Between Finger Flexion and Extension Force in Healthy Women and Women With Rheumatoid Arthritis”. Journal of Rehabilitation Medicine 44 (7):605-8. https://doi.org/10.2340/16501977-0986.