Pediatric parapneumonic empyema, Spain. by Obando, I, Muñoz-Almagro, C, Arroyo, L, Tarrago, D, Sanchez-Tatay, D, Moreno-Perez, D, Dhillon, S, Esteva, C, Hernandez-Bou, S, Garcia-Garcia, J, Hausdorff, W, Brueggemann, A