Gold, C., Eickholt, J., Assmus, J., Stige, B., Wake, J. D., Baker, F. A., …Geretsegger, M. (2019). Music Interventions for Dementia and Depression in ELderly care (MIDDEL): protocol and statistical analysis plan for a multinational cluster-randomised trial. BMJ Open, 9(3), Article e023436. https://doi.org/10.1136/bmjopen-2018-023436