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Changes in serum PTH and Ca before and after total thyroidectomy: (a) PTH and (b) Ca levels in patients who developed normocalcemia; (c) PTH and (d) Ca levels in patients who developed transient hypocalcemia. ∗p < 0.05 vs. preoperative; ∗∗p < 0.01 vs. preoperative. Pre, preoperative.
