PTH and Hypocalcemia: There were no cases of postoperative hypocalcemia in either groups (Costanzo et al. 2010), in fact, the values of serum calcium and parathyroid hormone, which are considered predictors of hypocalcemia (Cordon et al. 2005; Koutsoumanis et al. 2007; Grodski and Serpell 2008), were within standard values.