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Tseng, Ping‐Tao ORCID: https://orcid.org/0000-0001-5761-7800, Zeng, Bing‐Syuan, Thompson, Trevor ORCID: https://orcid.org/0000-0001-9880-782X, Stubbs, Brendon, Hsueh, Po‐Ren, Su, Kuan‐Pin ORCID: https://orcid.org/0000-0002-4501-2502, Chen, Yen‐Wen, Chen, Tien‐Yu, Wu, Yi‐Cheng, Lin, Pao‐Yen, Carvalho, Andre F., Hsu, Chih‐Wei ORCID: https://orcid.org/0000-0002-8650-4060, Li, Dian‐Jeng, Yeh, Ta‐Chuan, Sun, Cheuk‐Kwan, Cheng, Yu‐Shian, Shiue, Yow‐Ling, Liang, Chih‐Sung ORCID: https://orcid.org/0000-0003-1138-5586 and Tu, Yu‐Kang ORCID: https://orcid.org/0000-0002-2461-474X (2023) Placebo effects on all‐cause mortality of patients with COVID‐19 in randomized controlled trials of interleukin 6 antagonists: a systematic review and network meta‐analysis. Psychiatry and Clinical Neurosciences (PCN). ISSN 1323-1316 (Print), 1440-1819 (Online) (doi:10.1111/pcn.13592)