Figure 1: Bar charts with error bars. There were no significant statistical differences in preoperative iPTH (pre-iPTH: 1750 ± 619 pg/ml versus 1527 ± 451 pg/ml, ), postoperative iPTH (post-iPTH: 63 ± 78 pg/ml versus 53 ± 66 pg/ml, ), and 6 months iPTH value (6 months iPTH: 58 ± 66 pg/ml versus 53 ± 68 pg/ml, ) between groups. Boxes represent means; error bars indicate standard errors.