Study protocol for a randomized clinical pilot trial investigating feasibility and efficacy of augmenting a virtual reality-assisted intervention targeting auditory verbal hallucinations with biofeedback: The Neuro-VR study - Amalie Fabricius Habla; Sara Breivik Soleim; Anne Sofie Due; Tina Højsgaard Tinglef; Kasper Eskelund; Júlia Díaz-i-Calvete; Kit Melissa Larsen; Tina Dam Kristensen; Bjørn H. Ebdrup; Merete Nordentoft; Daniel Lyngholm; Kamilla Woznica Miskowiak; et al. (PLoS ONE, 2026)