AUTHOR CONTRIBUTIONS
Amanda J. Wheeler, Claire O'Reilly, Sara S. McMillan and Sarira El‐Den contributed to the design of the overall randomised controlled trial, and along with Victoria Stewart, Jie Hu and Jack C. Collins designed this particular study. Victoria Stewart collected the data and Sara S. McMillan and Victoria Stewart analysed the data. Victoria Stewart wrote the first draft of the manuscript. All authors commented on subsequent versions and read and approved the manuscript.