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Proc Natl Acad Sci U S A 68: 1456\u20131460.","DOI":"10.1073\/pnas.68.7.1456"},{"key":"23","doi-asserted-by":"crossref","unstructured":"23 Bouzidi H, de Brauwere D, Daudon M (2011) Does urinary stone composition and morphology help for prediction of primary hyperparathyroidism? Nephrol Dial Transplant 26: 565\u2013572.","DOI":"10.1093\/ndt\/gfq433"},{"key":"24","doi-asserted-by":"crossref","unstructured":"24 Parks JH, Coe FL, Evan AP, Worcester EM (2009) Clinical and laboratory characteristics of calcium stone-formers with and without primary hyperparathyroidism. BJU Int 103: 670\u2013678.","DOI":"10.1111\/j.1464-410X.2008.08064.x"},{"key":"25","doi-asserted-by":"crossref","unstructured":"25 Ferraro PM, Bargagli M, Trinchieri A, Gambaro G (2020) Risk of kidney stones: influence of dietary factors, dietary patterns, and vegetarian-vegan diets. 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