Figure 1

Preoperative, I° p.o., 1 year and 5 years after surgery mean iPTH levels. [t test= pre vs I°p.o.: p < 0,05; pre vs 1 year: p < 0,05; pre vs 5 years: p < 0,05]
Preoperative, I° p.o., 1 year and 5 years after surgery mean iPTH levels. [t test= pre vs I°p.o.: p < 0,05; pre vs 1 year: p < 0,05; pre vs 5 years: p < 0,05]