1. World Health Organization. Coronavirus Disease 2019 (COVID‐19) Situation Report—63. World Health Organization. 2020.www.who.int/docs/default‐source/coronaviruse/situationreports/20200323‐sitrep‐63‐covid‐19.pdf?sfvrsn=d97cb6dd_2. Accessed April 6 2020.
2. Investıgatıon of the effect of corona precautions on transmission prevention of upper respiratory tract infections and statistical comparison;Baydemır M;International Research in Medical and Health Sciences,2021