Conversion among the 28-joint count activity indices for rheumatoid arthritis
Khai Pang Leong , Justina Wei Lynn Tan , Xiao Gao , Ee Tzun Koh , TTSH Rheumatoid Arthritis Study Group
(Eur J Rheumatol 2020; 7: 105-111) DOI: 10.5152/eurjrheum.2020.19199