About the Authors
- Elisabetta De Cao
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Affiliations Department of Pharmacy, University of Groningen, Groningen, Netherlands, Department of Economics, Econometrics and Finance, University of Groningen, Groningen, Netherlands
- Alessia Melegaro
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Affiliation Policy Analysis and Public Management Department and Dondena Centre for Research on Social Dynamics, Bocconi University, Milan, Italy
- Rogier Klok
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Affiliation Pfizer bv, Specialty Care Business Unit, Capelle a/d IJssel, Netherlands
- Maarten Postma
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* E-mail: m.j.postma@rug.nl
Affiliation Department of Pharmacy, University of Groningen, Groningen, Netherlands
Competing Interests
RK is an employee of Pfizer Inc, whose company funded this study, manufacturer of Prevenar 13. Editorial support was provided by Vicki Schwartz, PhD, at Excerpta Medica, and was funded by Pfizer Inc. MJP is a PLOS ONE Editorial Board member. There are no further patents, products in development or marketed products to declare. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials.
Author Contributions
Conceived and designed the experiments: MJP RK EDC AM. Performed the experiments: EDC AM. Analyzed the data: EDC AM. Contributed reagents/materials/analysis tools: EDC AM. Wrote the paper: EDC AM MJP RK.