Autonomic dysfunction is associated with disease progression and survival in amyotrophic lateral sclerosis: a prospective longitudinal cohort study.

"Declarations Conflicts of interestThe authors have no relevant financial or non-financial interests to disclose. Ethics approvalThe study was approved by the ethics committee of the University Federico II of Naples (N. 100/17). All procedures were performed in accordance with the ethical outlines in the 1964 Helsinki Declaration and its later amendments. Consent to participateAll patients or their parents/legal representatives provided written informed consent for to participate in the study. Consent for publicationAll patients or their parents/legal representatives provided written informed consent for publication. Conflicts of interest The authors have no relevant financial or non-financial interests to disclose."

"Funding Open access funding provided by Università degli Studi di Napoli Federico II within the CRUI-CARE Agreement. None."