About the Authors

David M. Clifford

Current address: University of Melbourne, Melbourne, Australia

Affiliations Stem Cell Research Laboratory, NHS-Blood and Transplant, John Radcliffe Hospital, Oxford, United Kingdom, Nuffield Department of Clinical Laboratory Sciences, University of Oxford, Oxford, United Kingdom

Sheila A. Fisher

Affiliation Systematic Review Initiative, Clinical Research Group, NHSBT-Oxford, John Radcliffe Hospital, Oxford, United Kingdom

Susan J. Brunskill

Affiliation Systematic Review Initiative, Clinical Research Group, NHSBT-Oxford, John Radcliffe Hospital, Oxford, United Kingdom

Carolyn Doree

Affiliation Systematic Review Initiative, Clinical Research Group, NHSBT-Oxford, John Radcliffe Hospital, Oxford, United Kingdom

Anthony Mathur

Affiliations Department of Clinical Pharmacology, William Harvey Research Institute, London, United Kingdom, Barts and the London NIHR Biomedical Research Unit, London, United Kingdom

Mike J. Clarke

Affiliation All-Ireland Hub For Trials Methodology Research, Queen’s University, Belfast, United Kingdom

Suzanne M. Watt

Affiliations Stem Cell Research Laboratory, NHS-Blood and Transplant, John Radcliffe Hospital, Oxford, United Kingdom, Nuffield Department of Clinical Laboratory Sciences, University of Oxford, Oxford, United Kingdom

Enca Martin-Rendon

enca.rendon@ndcsl.ox.ac.uk

Affiliations Stem Cell Research Laboratory, NHS-Blood and Transplant, John Radcliffe Hospital, Oxford, United Kingdom, Nuffield Department of Clinical Laboratory Sciences, University of Oxford, Oxford, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SJB AM MC EMR. Performed the experiments: DMC SAF CD SJB EMR. Analyzed the data: DMC SAF EMR. Contributed reagents/materials/analysis tools: SMW. Wrote the paper: DMC EMR. Approved final version of the manuscript: DMC SAF CD SJB AM MC SMW EMR.