1. University Library University of Regensburg Regensburg Germany
2. Medical Library Augsburg University Library Augsburg Germany
3. Library Medical Faculty of Mannheim of Heidelberg University Mannheim Germany
4. Medical Library University Library of RWTH Aachen University Aachen Germany
5. Cochrane Metabolic and Endocrine Disorders Group Institute of General Practice Medical Faculty of the Heinrich‐Heine University Düsseldorf Germany