title: Ultraclean operating theatres: cost efficiency and energy saving aspects.
mesh_terms: D000389:Air Conditioning / Q000295:instrumentation*; D000397:Air Pollution / Q000517:prevention & control*; D003246:Conservation of Energy Resources / Q000379:methods; D003362:Cost-Benefit Analysis; D009873:Operating Rooms / Q000592:standards*; D013557:Switzerland