The Funding statement in the article was incorrect. The correct version of the Funding statement is available below.
The authors acknowledge the following sources of funding: The University of Liverpool, UK provided research costs; The University of Guadalajara, Mexico provided research costs and the Peter Lienhardt Memorial Fund and Philip Bagby Bequest from the University of Oxford, UK provided a travel grant. The funders played no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
Footnotes
Competing Interests: No competing interests declared.