1. Institute for Medical Psychology, Ernst-Moritz-Arndt-University Greifswald, Germany
2. Institute of Epidemiology and Social Medicine, Ernst-Moritz-Arndt-University Greifswald, Germany
3. University Children's Hospital, Department of Neonatology and Intensive Care, Ernst-Moritz-Arndt-University Greifswald, Germany
4. Institute for Community Medicine—Methods of Community Medicine, Ernst-Moritz-Arndt-University Greifswald, Germany
5. Robert-Koch-Institute, Berlin, Germany.