1 Department of Dermatology, Feinberg School of Medicine, Northwestern University, Chicago, Ilinois, USA.
2 Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA; Michigan Scleroderma Program, University of Michigan, Ann Arbor, Michigan, USA.
3 Department of Dermatology, University of Michigan, Ann Arbor, Michigan, USA.
4 Department of Biomedical Data Science, Geisel School of Medicine at Dartmouth College, Lebanon, New Hampshire, USA.
5 Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA.
6 Robert and Arlene Kogod Center on Aging, Mayo Clinic College of Medicine, Mayo Clinic Rochester, Minnesota, USA.
7 Signal Transduction and Molecular Nutrition Laboratory, Kogod Aging Center, Department of Anesthesiology and Perioperative Medicine, Mayo Clinic College of Medicine, Rochester, Minnesota, USA; Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Jacksonville, Florida, USA.
8 Division of Rheumatology and Clinical Immunology, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA.
9 Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA; Michigan Scleroderma Program, University of Michigan, Ann Arbor, Michigan, USA. Electronic address: vargaj@umich.edu.