Health-related quality of life and expectations of patients before surgical treatment of lumbar stenosis - Pacola, Lilian Maria; Nepomuceno, Eliane; Dantas, Rosana Aparecida Spadoti; Costa, Herton Rodrigo Tavares; Cunha, Débora Cristine Previdé Teixeira da; Herrero, Carlos Fernando Pereira da Silva; Defino, Helton Luiz Aparecido (Coluna/Columna, 2014)