1. Laboratory of Muscle Stem Cells and Gene Regulation National Institute of Arthritis and Musculoskeletal and Skin Diseases National Institutes of Health Bethesda MD USA
2. Cell Biology and Physiology Center National Heart, Lung, and Blood Institute National Institutes of Health Bethesda MD USA
3. Department of Medicine Obesity and Nutrition Section Evans Biomedical Research Center Boston University School of Medicine Boston MA USA