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First Online: 23 July 2020

Declarations

:

: All authors contributed to the study conception and design. Data collection and analysis were led by DE. The first draft of the manuscript was written by DB-W and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

: The survey, conducted by Qualtrics, was funded by a grant from Biogen. The company and panel provider had no role in designing, writing, or researching the paper, which was done independently by the authors.

: DB-W, DE, and RL declare that they have no conflict of interest.

: The study was approved by King College London’s Research Ethics Office (MRA-18/19-10710).

: All participants consented to participating before completing the questionnaire.

: Not applicable.

: The survey data generated during the current study and questionnaire are available from the corresponding author on reasonable request.

: Not applicable.