Oakley, R. J., Donnelly, R., Freeman, L., Wong, T., McCarthy, M., Calman, F., . . . Simo, R. (2009). An Audit of Percutaneous Endoscopic Gastrostomy Insertion in Patients Undergoing Treatment for Head and Neck Cancer: Reducing the Incidence of Peri-Operative Airway Events by the Introduction of a Tumour Assessment Protocol. The Royal College of Surgeons of England.

Oakley, Richard J., Rachael Donnelly, Lesley Freeman, Terry Wong, Michele McCarthy, Frances Calman, Mary O'Connell, Jean-Pierre Jeannon, und Ricard Simo. An Audit of Percutaneous Endoscopic Gastrostomy Insertion in Patients Undergoing Treatment for Head and Neck Cancer: Reducing the Incidence of Peri-Operative Airway Events By the Introduction of a Tumour Assessment Protocol. The Royal College of Surgeons of England, 2009.

Oakley, Richard J., et al. An Audit of Percutaneous Endoscopic Gastrostomy Insertion in Patients Undergoing Treatment for Head and Neck Cancer: Reducing the Incidence of Peri-Operative Airway Events By the Introduction of a Tumour Assessment Protocol. The Royal College of Surgeons of England, 2009.