Epidemiological and clinical aspects of a sample of Brazilian patients with primary dystonia and the impact of the new classification on their clinical evaluation oleh Torben Cavalcante Bezerra, Nathália Novaretti, Ana Luiza Nunes Cunha, Márcio Alexandre Pena Pereira, Daniel Sabino de Oliveira, Manuelina Capelari Marcuz Brito, Ângela Vieira Pimentel, Vitor Tumas