Transparency
Declaration of funding
This letter was not funded.
Declaration of financial/other relationships
The authors have no relevant financial relationships to disclose other than those already reported in their original article.
Acknowledgments
The authors would like to thank Prof. Rossella Di Bidino PhD MSc, health economist, external consultant of the Pricing and Reimbursement Committee, AIFA (Italian Medicines Agency) and Dr. Adam B. Smith PhD and Dr. Rob Hodgson PhD, statisticians at York Health Economics Consortium, University of York, for their valuable comments and suggestions in evaluating their results.