Sung YK, Lee YH. Placebo and nocebo responses in randomized controlled trials of non-tumor necrosis factor biologics and Janus kinase inhibitors in patients with active rheumatoid arthritis showing insufficient response to tumor necrosis factor inhibitors: A meta-anal Z Rheumatol 2021 Jul 9. pii: 10.1007/s00393-021-01047.
PMID: 34241691