Reflections on and recommendations from the OCEANIC study CYP and parent advisory group: a Patient and Public Involvement and Engagement case study. - Popejoy E; Menzies J; Sheikhi A; O'Loughlin S; O'Loughlin F; Barker D; White R; Latour JM; Draper ES; Quinlan P; Coad J; Manning JC (Research involvement and engagement, 2026)