1Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, Mayo Clinic, Rochester, MN 55905, USA
2Department of Medicine, Mayo Clinic College of Medicine, Mayo Clinic, Rochester, MN, USA
3Department of Pediatrics, Pediatric Rheumatology Section, Hospital Italiano de Buenos Aires, Gascón 450, 1181 Ciudad Autónoma de Buenos Aires, Argentina
4Department of Orthopaedic Surgery, The Perelman School of Medicine of The University of Pennsylvania, Philadelphia, PA 19104, USA
5Department of Medicine, The Perelman School of Medicine of The University of Pennsylvania, Philadelphia, PA 19104, USA
6Department of the Center for Research in FOP & Related Disorders, The Perelman School of Medicine of The University of Pennsylvania, Philadelphia, PA 19104, USA