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(Modified from Conlin PR, et al (Modified from Conlin PR, et al. Hysteresis in the relationship between serum ionized calcium and intact parathyroid hormone during recovery from induced hyper- and hypocalcemia in normal humans. J Clin Endocrinol Metab. 1989;69:593. By permission of the Journal of Clinical Endocrinology and Metabolism.) Source: Chapter 8. Metabolic Bone Disease, Greenspan’s Basic & Clinical Endocrinology, 9e Citation: Gardner DG, Shoback D. Greenspan’s Basic & Clinical Endocrinology, 9e; 2011 Available at: https://accessmedicine.mhmedical.com/DownloadImage.aspx?image=/data/Books/gard9/gard9_c008f002.gif&sec=39746038&BookID=380&ChapterSecID=39744048&imagename= Accessed: November 16, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved