1. https://covid19.who.int/.
2. Epidemiological characteristics of COVID-19: a systemic review and meta-analysis;Khalili;MedRxiv,2020
3. COVID-19: disease, management, treatment, and social impact;Ali;Sci. Total Environ.,2020
4. Pharmacologic treatments for coronavirus disease, (COVID-19): a review;Sanders;JAMA,2019
5. Anticoagulation in COVID-19: a systematic review, meta-analysis, and rapid guidance from mayo clinic;McBane;Mayo Clin. Proc.,2020