Affiliation: | 1. Institute of Social and Preventive Medicine (ISPM), University of Bern, Finkenhubelweg 11, 3012, Bern, Switzerland 2. University Children’s Hospital Zurich, Steinwiesstrasse 75, 8032, Zurich, Switzerland 3. Department of Paediatrics, University of Bern, Freiburgstrasse 4, 3010, Bern, Switzerland 4. Centre for Infectious Disease Epidemiology and Research, University of Cape Town, Rondebosch, Cape Town, 7700, South Africa
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