1. Department of Immunology and Rheumatology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico, and Muscle Disease Unit, Laboratory of Muscle Stem Cells and Gene Regulations, National Institute of Arthritis, Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, USA.
2. Muscle Disease Unit, Laboratory of Muscle Stem Cells and Gene Regulations, National Institute of Arthritis, Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, and Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
3. Systemic Autoimmune Disease Unit, Vall d’Hebron Research Institute, Barcelona, and Universitat Autonoma de Barcelona, Spain.
4. Muscle Disease Unit, Laboratory of Muscle Stem Cells and Gene Regulations, National Institute of Arthritis, Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, and Howard University College of Medicine, Washington DC, USA.
5. Muscle Disease Unit, Laboratory of Muscle Stem Cells and Gene Regulations, National Institute of Arthritis, Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, USA.
6. Red de Apoyo a la Investigación, Coordinación de Investigación Científica, Universidad Nacional Autónoma de México, Mexico City, Mexico.
7. Department of Immunology and Rheumatology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico.
8. Muscle Disease Unit, Laboratory of Muscle Stem Cells and Gene Regulations, National Institute of Arthritis, Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, USA, and Muscle Research Unit, Internal Medicine Service, Hospital Clínic de Barcelona, Universidad de Barcelona and CIBERER, Barcelona, Spain.
9. Systemic Autoimmune Disease Unit, Vall d’Hebron Research Institute, Barcelona, Spain.
10. Rheumatology Department, Vall d’Hebron Research Institute, Barcelona, Spain.
11. Muscle Disease Unit, Laboratory of Muscle Stem Cells and Gene Regulations, National Institute of Arthritis, Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda; Department of Neurology, Johns Hopkins University School of Medicine, Baltimore; and Department of Medicine, Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore, MD, USA. andrew.mammen@nih.gov