Revival of ecological studies during the COVID-19 pandemic Published on 2021-12-242022-10-31 Journal: European Journal of Epidemiology [키워드] COVID-19 pandemic ecological [저자] Jonas Björk, Karin Modig, Fredrik Kahn, Anders Ahlbom [Category] Coronavirus, SARS, PMC URL [DOI] 10.1007/s10654-021-00830-9 [Article Type] Commentary [Source] PMC All Keywords 【제목키워드】 COVID-19 pandemic, ecological,