Kaestner, Lisa, John Lazarus, and Elmi Muller. “Twenty Four-Hour Urine Collection Is Appropriate in a Cohort of South African Renal Stone Formers”. African Journal of Nephrology 24, no. 1 (December 15, 2021): 68-74. Accessed May 2, 2024. https://www.journals.ac.za/ajn/article/view/4543.