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4. Mineral homeostasis during lactation-relationship to serum 1,25-dihydroxyvitamin D, 25-hydroxyvitamin D, parathyroid hormone, and calcitonin;Greer;Am J Clin Nutr,1982
5. Adaptive response of humans to changes in dietary calcium. relationship between vitamin D regulated intestinal function and serum 1,25-dihydroxyvitamin D levels;Bikle;Gastroenterology,1983