About the Authors
Department of Anatomy and Developmental Biology, University College London, London, United Kingdom
Neonatal Intensive Care Unit, Elizabeth Garrett Anderson and Obstetric Hospital, London, United Kingdom
Centre for Nursing and Allied Health Professions Research, Institute of Child Health, University College London, London, United Kingdom
The authors have declared that no competing interests exist.
RS, JM, and MF conceived of and designed the study. RS, AC, and JM were involved in the acquisition of data. RS, AC, LF, JM, and MF analysed the data. RS, JM, and MF interpreted the data. RS, AC, LF, JM, MF revised the manuscript for critically important intellectual content. JM and MF obtained funding.