Developing and validating the co-creation rainbow framework for intrinsic evaluation of methods: a health CASCADE structured review of models representing co-creation principles. - Agnello, Danielle Marie; Smith, Niamh; Vogelsang, Mira; Steiner, Artur; An, Qingfan; de Boer, Janneke; Calo, Francesca; Delfmann, Lea; Hutcheon, Danielle; Longworth, Giuliana Raffaella; Loisel, Quentin; Mazzei, Micaela; et al. (Health Research Policy & Systems, 2025)