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Ishii Y, Aoki K, Oda M, et al. A study of quality assessment in SARS-CoV-2 pathogen nucleic acid amplification tests performance; from the results of external quality assessment survey of clinical laboratories in the Tokyo Metropolitan Government external quality assessment program in 2020. J Infect Chemother. 2022;28:242-247.","key":"4","DOI":"10.1016\/j.jiac.2021.10.027"},{"doi-asserted-by":"crossref","unstructured":"5. Sugishita Y, Moriuchi R, Ishii Y. External quality assessment survey for SARS-CoV-2 nucleic acid amplification tests in clinical laboratories in Tokyo, 2021. J Infect Chemother. 2024;30:633-641.","key":"5","DOI":"10.1016\/j.jiac.2024.01.016"},{"unstructured":"6. Infectious Disease Control Division, Bureau of Public Health, Tokyo Metropolitan Government. The Tokyo Metropolitan Government External quality assessment of SARS-CoV-2 nucleic acid amplification tests for medical institutions treating fever patients project report. Available at &lt;https:\/\/www.hokeniryo.metro.tokyo.lg.jp\/kansen\/seidokanri.html&gt;. Accessed June 6, 2024. Japanese.","key":"6"},{"unstructured":"7. Japan Association of Clinical Reagents Industries. List of SARS-Cov-2 related reagents, Japan Association for Clinical Laboratory Medicine. Available at &lt;https:\/\/jacri-ivd.jp\/info\/forprofessionals\/corona\/&gt;. Accessed September 6, 2024. Japanese.","key":"7"},{"doi-asserted-by":"crossref","unstructured":"8. Asai S, Seki A, Akai Y, et al. Nationwide external quality assessment of SARS-CoV-2 nucleic acid amplification tests in Japan. Int J Infect Dis. 2022;115:86-92.","key":"8","DOI":"10.1016\/j.ijid.2021.11.022"},{"doi-asserted-by":"crossref","unstructured":"9. Sluimer J, Willem M, Gabriel Akker R, et. al. High quality of SARS-CoV-2 molecular diagnostics in a diverse laboratory landscape through supported benchmark testing and external quality assessment. 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