Sourced of - Vejon Health - https://www.youtube.com/watch?v=t6-wSCaD94Q Paper Kompaniyets, Lyudmyla, et al. "Peer reviewed: underlying medical conditions and severe illness among 540,667 adults hospitalized with COVID-19, March 2020–March 2021." Preventing chronic disease 18 (2021). https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8269743/