Norberg , B., Norberg , A., Odelhög , S.-O., Parkhede , U. and Gippert , H. (1982) “The Bacteriuria in Long-stay Geriatric Inpatients with an Indwelling Catheter: A copper-coated urinary catheter”, Upsala Journal of Medical Sciences, 87(2), pp. 179-187. doi: 10.3109/03009738209178423.