1. Department of Medicine, Perelman School of Medicine; University of Pennsylvania; Philadelphia PA USA
2. Department of Orthopaedic Surgery, Perelman School of Medicine; University of Pennsylvania; Philadelphia PA USA
3. The Center for Research in FOP and Related Disorders, Perelman School of Medicine; University of Pennsylvania; Philadelphia PA USA
4. International FOP Association; Winter Springs; FL USA
5. Department of Public Health Sciences; School of Medicine; University of California, Davis; Davis CA USA
6. Department of Biomedical Engineering; University of California, Davis; Davis CA USA
7. Department of Genetics, Perelman School of Medicine; University of Pennsylvania; Philadelphia PA USA