https://www.rtve.es/play/audios/de-vuelta-en-radio-5/vuelta-17-30-18h-2021-10-31t18-37-47407/6169243/
https://www.actasanitaria.com/opinion/el-mirador/son-inutiles-mascarillas-en-pandemia-covid19-lo-sabiamos-han-reconfirmado_2004902_102.html
https://diario16.com/la-etica-sin-etica/