affiliation not provided to SSRN, University of Basel - University Hospital Basel, University of Basel - University Hospital Basel, University of Hamburg - University Medical Center Hamburg-Eppendorf, University of Basel - University Hospital Basel, University of Basel - University Hospital Basel, University of Basel - University Hospital Basel, affiliation not provided to SSRN, affiliation not provided to SSRN, University of Basel, University of Basel, University of Basel - Swiss Tropical and Public Health Institute, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, University of Basel and University of Basel