SARS, MERS and SARS-CoV-2 (COVID-19) treatment: a patent reviewBy José Adão Carvalho Nascimento Junior ORCID Icon, Anamaria Mendonça Santos , Lucindo José Quintans-Júnior ORCID Icon, Cristiani Isabel Banderó Walker , Lysandro Pinto Borges & Mairim Russo Serafini ORCID Icon