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Research ethics: The study protocol was approved the local research ethics committee and complied with the World Medical Association Declaration of Helsinki regarding ethical conduct of research involving human subjects.
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Informed consent: Informed consent was obtained from all individuals included in this study.
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Author contributions: The authors have accepted responsibility for the entire content of this manuscript and approved its submission.
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Competing interests: The authors state no conflict of interest.
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Research funding: Drusus A. Johnson is a doctoral researcher funded by Bridge Farm Nurseries ltd. and Loughborough University. The funder played no role in the production of this manuscript.
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Data availability: The raw data can be obtained on request from the corresponding author.
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