Author Contributions
MR, BFIS, RP
All authors, with the exception of JSB, made significant contributions to the conception and design of the study, with particularly substantial contributions from KSH, TR, and RP. LH and KSH developed the BFIS fidelity scale with input from the other authors. MR did a preliminary mapping of the participating units’ structure, organisation and practice, and made substantial efforts to recruit clinical units with aid from the other authors. KSH provided training in fidelity measurement to the fidelity assessors. MR, LH and KMH did most of the data collection, with assistance from RP and KSH. Statistical analyses were mainly carried out by JSB, with assistance from LH. LH wrote the first draft of this article. All the authors critically revised the article, gave their final approval before submission, and agreed to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved.