Martinez-Martin, P. ., Schapira, A. ., Stocchi, F. ., Sethi, K. ., Odin, P. ., MacPhee, G. ., … Chaudhuri, K. . (2007). Prevalence of nonmotor symptoms in Parkinson’s disease in an international setting; study using nonmotor symptoms questionnaire in 545 patients. Movement Disorders : Official Journal of the Movement Disorder Society, 22(11), 1623-9. https://doi.org/10.1002/mds.21586 (Original work published 2007)

Drakatos, P. ., Marples, L. ., Muza, R. ., Higgins, S. ., Nesbitt, A. ., Dongol, E. ., … Kent, B. . (2019). Video polysomnographic findings in non-rapid eye movement parasomnia. Journal of Sleep Research, 28(2), e12772. https://doi.org/10.1111/jsr.12772

McDonald, S. ., Williams, A. ., Barr, P. ., McNamara, N. ., & Marriott, M. . (2021). Service user and eating disorder therapist views on anorexia nervosa recovery criteria. Psychology and Psychotherapy, 94(3), 721-736. https://doi.org/10.1111/papt.12340