van Hienen, M. M., Contarino, M. F., Middelkoop, H. A., van Hilten, J. J., & Geraedts, V. J. (2020). Effect of deep brain stimulation on caregivers of patients with Parkinson's disease: A systematic review. Parkinsonism and Related Disorders, 81, 20-27. https://doi.org/10.1016/j.parkreldis.2020.09.038

van Hienen, Marle M., Maria Fiorella Contarino, Huub A.M Middelkoop, Jacobus J. van Hilten, and Victor J. Geraedts. "Effect of Deep Brain Stimulation on Caregivers of Patients with Parkinson's Disease: A Systematic Review." Parkinsonism and Related Disorders 81 (2020): 20-27. https://doi.org/10.1016/j.parkreldis.2020.09.038.

van Hienen, Marle M., et al. "Effect of Deep Brain Stimulation on Caregivers of Patients with Parkinson's Disease: A Systematic Review." Parkinsonism and Related Disorders, vol. 81, 2020, pp. 20-27, https://doi.org/10.1016/j.parkreldis.2020.09.038.