COVID-19 and the social determinants of health and health equity. Evidence brief (OMS, 2021) Dokumentu-zerrenda https://apps.who.int/iris/rest/bitstreams/1389412/retrieve Xehetasunak "COVID-19 and the social determinants of health and health equity. Evidence brief " (OMS, 2021) dokumentoaren azalaren zati bat erreprodukzioa