- China Tests Thousands to Calculate True Spread of Coronavirus https://www.bloombergquint.com/china/china-tests-thousands-to-calculate-true-spread-of-coronavirus 4 comments worldnews
- China tests thousands to calculate true spread of coronavirus https://www.japantimes.co.jp/news/2020/04/20/asia-pacific/science-health-asia-pacific/china-tests-thousands-spread-coronavirus 4 comments worldnews