Longitudinal outcomes of severe post-stroke dysphagia: high mortality, partial recovery, and persistent dependence on alternative feeding Gabriela Mourthé Félix; Fernanda Chiarion Sassi; Carina Escudero; Karoline Kussik de Almeida Leite; Ana Paula Ritto; Cirley Novais Valente Junior; Claudia Regina Furquim de Andrade;