REFERENCES
- Archer, H. C., Dormer, A. E., Scowen, E. F. & Watts, R. W. E. 1957. Studies of urinary excretion of oxalate by normal subjects. Clin Sci 16, 405.
- Bordier, P., Ryckewart, A., Gueris, J. & Rasmussen, H. 1977. On the pathogenesis of so-called idiopathic hypercalciuria. Am J Med 63, 398.
- Corless, D., Gupta, S. P., Switala, S., Barragry, J. M., Boucher, B. J. & Cohen, R. D. 1978. Response of plasma-25-hydroxyvitamin D to ultraviolet irradiation in long-stay geriatric patients. Lancet, ii, 649.
- Doumas, B. T., Watson, W. A. & Biggs, H. G. 1971. Albumin standards and the measurement of serum albumin with bromcresol green. Clin Chim Acta 31, 87.
- Edwards, N. A. & Hodgkinson, A. 1965. Metabolic studies in patients with idiopathic hypercalciuria. Clin Sci 29, 143.
- Elliott, J. P.Jr, Gordon, J. O., Evans, J. W. & Piatt, L. 1975. A stone season. A 10-year retrospective study of 768 surgical stone cases with respect to seasonal variation. J Urol 114, 574.
- Elomaa, I. 1979. Idiopathic hypercalciuria. Its relation to renal calculi and hyperparathyroidism. Academic dissertation. University of Helsinki, Finland.
- Gustafsson, J. E. C. 1976. Improved specificity of serum albumin determination and estimation of acute phase reactants by use of the bromcresol green reaction. Clin Chem 22, 616.
- de Jonge, H. 1964. Verhandeling van het Nederlands Instituut voor Praeventieve Geneeskunde. In Inleiding tot de Medische Statistiek, Deel II. 2nd ed., p. 486. Leiden.
- Kaplan, R. A., Haussler, M. R., Deftos, L. J., Bone, H. & Pak, C. Y. C. 1977. The role of 1,25-dihydroxyvitamin D in the mediation of intestinal hyperabsorption of calcium in primary hyperparathyroidism and absorptive hypercalciuria. J Clin Invest 59, 756.
- Ljunghall, S., Hedstrand, H., Hellsing, K. & Wibell, L. 1977. Calcium, phosphate and albumin in serum. Acta Med Stand 201, 23.
- Lund, B. & Sörensen, O. H. 1979. Measurement of 25-hydroxyvitamin D in serum and its relation to sunshine, age and vitamin D intake in the Danish population. Scand J Clin Lab Invest 39, 23.
- Malm, O. J. 1958. Calcium requirement and adaption in adult men. Scand J Clin Lab Invest, 36 (suppl.), 10.
- Manila, S. 1978. Tilastotiede I, p. 125. Oy Gaudeamus Ab, Helsinki.
- McLaughlin, M., Raggatt, P. R., Fairney, A., Brown, D. J., Lester, E. & Wills, M. R. 1974. Seasonal variations in serum 25-OH-D3 in healthy people. Lancet, i, 536.
- Morgan, D. B., Rivlin, R. S. & Davies, R. H. 1972. Seasonal changes in the urinary excretion of calcium. Am J Clin Nutr 25, 652.
- Pak, C. Y. C., Kaplan, R., Bone, H., Townsend, J. & Waters, O. 1975. A simple test for the diagnosis of absorptive, resoptive and renal hypercalciuria. N Engl J Med 292, 497.
- Praetorius, E. & Poulsen, H. 1953. Enzymatic determination of uric acid with detailed directions. Scand J Clin Lab Invest 5, 273.
- Preece, M. A., O'Riordan, J. L. H., Lawson, D. E. M. & Kodicek, E. 1974. A competitive protein binding assay for 25(OH)-cholecalciferol and 25(OH)-ergocalciferol in serum. Clin Chim Acta 54, 235.
- Robertson, W. G., Gallagher, J. C., Marshall, D. H., Peacock, M. & Nordin, B. E. C. 1974. Seasonal variations in urinary excretion of calcium. Br Med J 4, 436.
- Robertson, W. G., Peacock, M., Marshall, R. W., Speed, R. & Nordin, B. E. C. 1975. Seasonal variations in the composition of urine in relation to calcium stone-formation. Clin Sci Mol Med 49, 597.
- Röcker, L., Feddersen, H.-M., Hoffmeister, H. & Junge, B. 1980. Jahreszeitliche Veränderungen diagnostisch wichtiger Blutbestandteile. Klin Wochenschr 58, 769.
- Shen, F. H., Baylink, D. J., Nielsen, R. L., Sherrard, D. J., Ivey, J. L. & Haussler, M. R. 1977. Increased serum 1,25-dihydroxy vitamin D in idiopathic hypercalciuria. J Lab Clin Med 90, 955.
- Stamp, T. C. B. & Round, J. M. 1974. Seasonal changes in human plasma levels of 25-hydroxyvitamin D. Nature 247, 563.
- Stryd, R. P., Gilbertson, T. J. & Brunden, M. N. 1979. A seasonal variation of 25-hydroxyvitamin D3 serum levels in normal humans. J Clin Endocrinol Metab 48, 771.