Acknowledgements

We would like to thank Professor Dr Klaus Riegel ( deceased ) and Dr Barbara Ohrt, who began planning the study in 1984 and conducted Phase I.
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We would also like to thank the more than 100 staff members (pediatricians, psychologists, research nurses, social workers and medical students) who contacted participants and collected data over the past 40 years.In addition, thanks go to the data managers, statisticians, postdoctoral researchers and doctoral students who analyzed the data and contributed to the numerous publications. Finally, we are grateful for the many millions in funding that have supported this study over the past 40 years. Our funders have included the German Federal Ministry of Education and Research (BMBF), the German Research Foundation (DFG), the European Union's Horizon 2020 and Horizon Europe programs, the European Research Council (ERC), and the United Kingdom Research and Innovation (UKRI).  
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We would especially like to thank all the participants in the study and their parents without whom this study would not have been possible.                                                  

Thank you all!