Dowson, Becky, Schneider, Justine, Guo, Boliang, Bath, Philip M., Mcdermott, Orii, Haywood, Lee J., Orrell, Martin, "Pilot Randomised Evaluation of Singing in Dementia (PRESIDE): protocol for a two-arm, parallel group randomised controlled feasibility study with waiting-list control", Pilot and Feasibility Studies, 2025