Text and Data Mining valid from 2018-08-21
Received: 15 February 2018
Accepted: 7 August 2018
First Online: 21 August 2018
Ethics approval and consent to participate
: Ethical approval for the study was granted by the School of Pharmacy and Postgraduate Medicine Ethics Committee with Delegated Authority, University of Hertfordshire, Hatfield, UK (ethics approval number: PHAEC/10–25). All volunteers participating in the study provided written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.
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