Martín Martín R, Yep Chullen G, Sánchez Bayle M, Villalobos Pinto E, Flores Pérez P. Nebulized 3% hypertonic saline solution in hospitalized infants with acute bronchiolitis: case-control study on the utility and effectiveness. Rev Pediatr Aten Primaria. 2013;15:109-15.