Training and competency frameworks used in the preparation of healthcare professionals for head and neck cancer screening: A scoping review protocol - Louise C. Occomore-Kent; Charitini Stavropoulou; Elizabeth C. Ward; Chris Elkington; John C. Hardman; Joanne M. Patterson; Nikki Rousseau; Vinidh Paleri; Madeline Cruice (PLoS ONE, 2025)