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C.D. has received travel expenses to attend scientific meetings from Alter and Bial. M.M.K. has received honoraria for talks from Bial and International Parkinsonism and Movement Disorder Society, and travel expenses to attend scientific meetings from Boston Scientific; she is currently participating in a Michael J. Fox Grant. I.P. has received travel expenses to attend scientific meetings from Neuroaxpharm and International Parkinsonism and Movement Disorder Society and honoraria for speaking at meetings from Allergan, and International Parkinsonism and Movement Disorders Society.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest"}},{"value":"This study was approved by the Ruber International Hospital Clinical Research Ethics Committee and has therefore been performed in accordance with the ethical standards laid down in the 1964 declaration of Helsinki and its later amendments. All the data obtained were anonymized. Informed patient consent was not necessary for this work. We confirm that we have read the Journal\u2019s position on issues involved in ethical publication and affirm that this work is consistent with those guidelines.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical approval"}}]}}