About the Authors

Anna Hvarfner

Roles Data curation, Formal analysis, Investigation, Methodology, Project administration, Validation, Writing – original draft, Writing – review & editing

anna.hvarfner@gmail.com

Affiliations Center for Clinical Research Dalarna, Uppsala University, Falun, Sweden, Department of Global Public Health, Karolinska Institute, Stockholm, Sweden

Ahmed Al-Djaber

Roles Data curation, Investigation, Methodology, Validation, Writing – review & editing

Affiliations Center for Clinical Research Sörmland, Uppsala University, Eskilstuna, Sweden, Department of Medicine, Nyköping Hospital, Nyköping, Sweden

Hampus Ekström

Roles Data curation, Investigation, Methodology, Validation, Writing – review & editing

Affiliations Center for Clinical Research Sörmland, Uppsala University, Eskilstuna, Sweden, Department of Medicine, Nyköping Hospital, Nyköping, Sweden

Malin Enarsson

Roles Data curation, Writing – review & editing

Affiliations Center for Clinical Research Sörmland, Uppsala University, Eskilstuna, Sweden, Department of Infectious diseases, Eskilstuna Hospital, Eskilstuna, Sweden

Markus Castegren

Roles Methodology, Writing – review & editing

Affiliations Center for Clinical Research Sörmland, Uppsala University, Eskilstuna, Sweden, CLINTEC and FyFa, Karolinska Institute, Stockholm, Sweden

Tim Baker

Contributed equally to this work with: Tim Baker, Carl Otto Schell

Roles Conceptualization, Formal analysis, Methodology, Supervision, Writing – original draft, Writing – review & editing

Affiliations Department of Global Public Health, Karolinska Institute, Stockholm, Sweden, Department of Clinical Research, London School of Hygiene and Tropical Medicine, London, United Kingdom

Carl Otto Schell

Contributed equally to this work with: Tim Baker, Carl Otto Schell

Roles Conceptualization, Formal analysis, Methodology, Supervision, Validation, Writing – original draft, Writing – review & editing

Affiliations Department of Global Public Health, Karolinska Institute, Stockholm, Sweden, Center for Clinical Research Sörmland, Uppsala University, Eskilstuna, Sweden

Competing Interests

I have read the journal’s policy and the authors of this manuscript have the following competing interests: Dr. Baker reports a grant and personal fees from Wellcome Trust, and personal fees from UNICEF and the World Bank, all outside the submitted work. This does not alter our adherence to PLOS ONE policies on sharing data and materials. The other authors declare no competing interests.