Effectiveness of a nationwide nosocomial infection surveillance system for reducing nosocomial infections
Pontiac fever: isolation of the etiologic agent (Legionella pneumophila) and demonstration of its mode of transmission.
Germicidal ultraviolet irradiation in air conditioning systems: effect on office worker health and wellbeing __ a pilot study.
Room air disinfection by ultraviolet irradiation of upper air: air mixing and germicidal effectiveness.