Norberg B., Norberg A., Parkhede U., Gippert H., & Ã…kerman M. (1979). The Effect of Short-term High-dose Treatment with Methenamine Hippurate of Urinary Infection in Geriatric Patients with Indwelling Catheters: I. The preparation and morphology of a quantified urine sediment. Upsala Journal of Medical Sciences, 84(1), 67-74. https://doi.org/10.3109/03009737909179141