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Article History

Received: 31 August 2017

Accepted: 12 April 2018

First Online: 18 April 2018

Ethics approval and consent to participate

: Using the online Health Research Authority Decision tool, it was determined that UK ethical approval was not needed for this study because it was considered to be minimal risk and was non-interventional, with participants answering questions in an interview setting []. However, the study design and materials were reviewed and approved by Salus IRB [], a US-based institutional review board (IRB) accredited by the Association for the Accreditation of Human Research Protection Programs. All participants gave their written informed consent to participate in the study.

: N.C. was an independent contractor for Laser Analytica at the time of study conduct.J.C. was an employee of Laser Analytica at the time of study conduct and manuscript development.J.C.C., K.L., R.M., and C.M. are shareholders and employees of Pfizer Inc.P.M. has no competing interests to disclose.

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