The coronavirus disease-2019 (COVID-19) caused by the new coronavirus known as SARS-CoV-2 was recently reported in China, in late December 2019 and quickly spread worldwide [1-3]. As of February 13, 2021, there were 107,838,255 confirmed cases of COVID-19 and total number of deaths due to COVID-19 was 2,373,398 worldwide [3].
