1. Orthopaedic Hospital Research Center Los Angeles California USA
2. Helmholtz Zentrum Munich Institute of Experimental Genetics German Research Center for Environmental Health Neuherberg Germany
3. Technical University Munich Center of Life and Food Sciences Freising Germany
4. Division of Endocrinology Metabolism, and Lipids, Department of Medicine Emory University School of Medicine Atlanta Georgia USA
5. Molecular Biology Institute University of California–Los Angeles Los Angeles California USA