Organ preservation and oncological outcomes in early laryngeal cancer: a propensity score-based study - Genival Barbosa de Carvalho; Hugo Fontan Kohler; Julia Bette Homem de Mello; Renan Bezerra Lira; Antonio Cássio de Assis Pellizzon; José Guilherme Vartanian; Luiz Paulo Kowalski (Acta Otorhinolaryngologica Italica, 2021)