Accepted: 1 October 2020
First Online: 30 October 2020
: No sources of funding were used to assist in the preparation of this review.
: Rachael Lawson, Christine E. Staatz, Christopher J. Fraser and Stefanie Hennig have no conflicts of interest that are relevant to the contents of this review.
: All data generated or analysed during this study are included in this published article and its supplementary information files.
: Not applicable.
: All authors contributed to the study conception and design. Material preparation and data collection was performed by Rachael Lawson. Data analysis was performed by Rachael Lawson, Stefanie Hennig, Christine Staatz and Chris Fraser. The first draft of the manuscript was written by Rachael Lawson and all authors commented on previous versions of the manuscript. All authors read and approved the final version of the manuscript.