https://www.affaritaliani.it/rubriche/tuttasalute/notiziario/covid_lettera150_mancano_controlli_mascherine_consentire_test_a_universita-187929.html

https://www.lasicilia.it/news/salute/396514/covid-lettera150-mancano-controlli-mascherine-consentire-test-a-universita.html

https://www.liberoquotidiano.it/news/adnkronos/26391621/covid-lettera150-mancano-controlli-mascherine-consentire-test-a-universita-.html

https://www.iltempo.it/adnkronos/2021/03/02/news/covid-lettera150-mancano-controlli-mascherine-consentire-test-a-universita–26391626/