Can the implementation of electronic surveys with quick response (QR) codes be useful in the COVID-19 era? Published on 2020-10-012023-07-06 Journal: International Journal of Epidemiology [저자] Andrea Faggiano, Stefano Carugo [Category] SARS, PMC URL Pubmed URL [DOI] 10.1093/ije/dyaa170 [Source] pubmed All Keywords