Author Contributions: Dr J. Schmitt had full access to all of the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis.
Study concept and design: J. Schmitt, Romanos, N. M. Schmitt, Meurer, Kirch.
Acquisition of data: J. Schmitt, N. M. Schmitt, Kirch.
Analysis and interpretation of data: J. Schmitt, Romanos, N. M. Schmitt, Meurer, Kirch.
Drafting of the manuscript: J. Schmitt, Romanos.
Critical revision of the manuscript for important intellectual content: J. Schmitt, Romanos, N. M. Schmitt, Meurer, Kirch.
Statistical analysis: J. Schmitt.
Administrative, technical, or material support: Meurer, Kirch.
Study supervision: J. Schmitt, Meurer, Kirch.
Financial Disclosures: None reported.
Additional Contributions: The Regional Association of Statutory Health Insurance Physicians Saxony and the Saxony Compulsory Health Insurance, Allgemeine Ortskrankenkasse (AOK) Sachsen, provided technical support in data utilization. None of these organizations received any compensation for their support.