Editorial: Cell-based Therapies for Stroke: Promising Solution or Dead End? - Johannes Boltze; Koji Abe; Andrew N. Clarkson; Oliver Detante; Oliver Detante; Pedro M. Pimentel-Coelho; Pedro M. Pimentel-Coelho; Paulo H. Rosado-de-Castro; Paulo H. Rosado-de-Castro; Paulo H. Rosado-de-Castro; Miroslaw Janowski; Miroslaw Janowski (Frontiers in Neurology, 2020)