1. World Health Organization. WHO characterizes COVID-19 as a pandemic [Internet]. 11 Mar 2020. Available from: https://www.who.int/emergencies/diseases/novel-coronavirus-2019/events-as-they-happen
2. World Health Organization. WHO situation report as of 29 March 2020 [Internet]. Available from: https://www.who.int/emergencies/diseases/novel-coronavirus-2019/situation-reports
3. IHME COVID-19 health service utilization forecasting team. Forecasting COVID-19 impact on hospital bed-days, ICU-days, ventilator days and deaths by US state in the next 4 months [Internet]. MedRxiv. 26 Mar 2020. Available from: www.healthdata.org/research-article/forecasting-covid-19-impact-hospital-bed-days-icu-days-ventilator-days-and-deaths
4. Ministry of Health, Labor and Welfare. Coronavirus disease 2019 (COVID-19) situation within and outside the country as of 29 Mar 2020 [Internet]. Available from: https://www.mhlw.go.jp/stf/seisakunitsuite/bunya/newpage_00032.html
5. The data is based on the WHO’s situation report below: https://www.who.int/docs/default-source/coronaviruse/situation-reports/20200328-sitrep-68-covid-19.pdf