The COMBAT Project: study protocol for the development of a core outcome set for morbidity following surgery in paediatric brain tumour patients

Sandhya Trichinopoly Krishna^*, Nicola Harman, Conor Mallucci, Barry Pizer, Michael D Jenkinson, Kristian Aquilina, Kim Bull, Jon Foss-Skiftesvik, Helen Hartley, James Hayden, Colin Kennedy, Ulrich W Thomale, Sophie Wilne, Jeffrey H Wisoff, Faris Bouaouiche, Liz Hull, John Robinson, Hannah L Vickers, Carrol Gamble