Competing interests
Verband der
HS and JI are employees of the Association of Substitute Health Funds („Verband der Ersatzkassen e. V“ (vdek)). The association represents the interests of six German statutory health insurance funds and also acts as their service provider. The six funds insure over 28 million people throughout Germany. MB (Marc Biedermann) is employee of the National Association of Statutory Health Insurance Physicians, which is the federal organisation of the 17 regional Associations of Statutory Health Insurance Physicians and represents about 183000 office-based physicians and psychotherapists. MB (Maike Below) and DF are employees of the Central Research Institute of Ambulatory Health Care, which is a foundation of the ASHIP and the National Association of Statutory Health Insurance Physicians and processes data on their behalf. DH is the director of the Communication Lab Erfurt, which offers consultations on the topic of health communication, particularly in the area of vaccination. SAKU, AZ, and LA declare no potential conflicts of interest.