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Acknowledgments
The authors thank Afonso Rocha (Department of Rehabilitation Medicine), Paulo Linhares (Department of Neurosurgery), Lígia Castro and Stirling Carpenter (Neuropathology Unit), and José Ribeiro (Department of Neurophysiology), from the Centro Hospitalar de São João, Porto, Portugal.
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Oliveira, A., Massano, J. & Rosas, M.J. Dropped head syndrome in early-onset Parkinson disease treated with bilateral subthalamic stimulation: clinical, imaging, EMG, and biopsy findings. Neurol Sci 34, 593–594 (2013). https://doi.org/10.1007/s10072-012-1089-7
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DOI: https://doi.org/10.1007/s10072-012-1089-7