PT - JOURNAL ARTICLE AU - Esposito, Susanna AU - Principi, Nicola AU - Leung, Chi Chi AU - Migliori, Giovanni Battista TI - Universal use of face masks for success against COVID-19: evidence and implications for prevention policies AID - 10.1183/13993003.01260-2020 DP - 2020 Jun 01 TA - European Respiratory Journal PG - 2001260 VI - 55 IP - 6 4099 - http://erj.ersjournals.com/content/55/6/2001260.short 4100 - http://erj.ersjournals.com/content/55/6/2001260.full SO - Eur Respir J2020 Jun 01; 55