Erratum

Following publication of our article [1], it has been brought to our attention that we have incorrectly stated the PTH levels for the low risk and high risk patients in the Methods section in the Abstract.

The correct sentence should be:

Based on our previous work, patients were stratified into either a low risk group (PTH ≥ 12 pg/ml) or a high risk group (PTH < 12 pg/ml).

We would like to apologise for any confusion caused to our readers.