About the Authors
- Sarah Donegan
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* E-mail: Sarah.Donegan@liverpool.ac.uk
Affiliation Centre for Medical Statistics and Health Evaluation, University of Liverpool, Liverpool, United Kingdom
- Paula Williamson
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Affiliation Centre for Medical Statistics and Health Evaluation, University of Liverpool, Liverpool, United Kingdom
- Carrol Gamble
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Affiliation Centre for Medical Statistics and Health Evaluation, University of Liverpool, Liverpool, United Kingdom
- Catrin Tudur-Smith
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Affiliation Centre for Medical Statistics and Health Evaluation, University of Liverpool, Liverpool, United Kingdom
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Wrote the paper: SD CTS. Planned a search strategy, developed quality assessment criteria, and designed eligibility, data extraction, and quality assessment forms: SD. Pre-piloted the forms, searched for reviews, assessed eligibility, extracted data, and assessed the quality of indirect comparisons: SD. Summarised the data extracted and the quality assessment and prepared the first version of the review: SD. Proposed the review and provided comments on the manuscript: PW. Discussed ideas: CG. Undertook eligibility assessments, data extraction and quality assessment: CTS.