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Table 4 Assessment of quality of the included cohort studies. NOS heat map [89,90,91,92,93,94,95,96,97,98,99,100,101,102,103, 106,107,108,109,110,111,112,113,114,115,116,117, 119, 121, 122, 130]

From: Employment of patients with rheumatoid arthritis - a systematic review and meta-analysis