K. O'Sullivan

An Institutional experience with primary hyperparathyroidism in the elderly over two decades.

Douglas B. Evans, Tracy S. Wang, T. Yen, 2021, American journal of surgery.

Surveillance in Barrett's oesophagus: will a strategy focused on a high-risk group reduce mortality from oesophageal adenocarcinoma?

E. Quigley, R. Quera, K. O'Sullivan, 2006, Endoscopy.