write the research methodology of impact of covid 19 on travel?
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In March 2020 , the WHO declared COVID-19 a pandemic , caused by the noval SARS-CoV-2 virus. Following the call from WHO, to immediately assess available data to learn what care approaches are most effective and evaluate the effects of therapies , this collection aims to report an original peer-reviewed research articles in methodological approaches to medical research related to COVID-19 .
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