https://www.theepochtimes.com/japan-reports-more-suspected-cases-of-unexplained-acute-hepatitis-in-children_4451648.html
https://www.mhlw.go.jp/content/000936031.pdf
https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/1073704/acute-hepatitis-technical-briefing-2.pdf