We looked at rooms that were naturally ventilated, where the hospital let us turn off the mechanical ventilation in a wing of the building and pry open the windows that were no longer operable, but they made them operable for our study.
Tamén habitacións ventiladas de forma natural, donde se nos permitiu apagar os sistemas de ventilación mecánica nunha zona do edificio e abrir an fiestras que xa non se empregaban, pero que se fixeron útiles para o noso estudo.