1. Department of Orthopaedic Surgery, Perelman School of MedicineThe University of PennsylvaniaPhiladelphiaPAUSA
2. The Center for Research in FOP and Related Disorders, Perelman School of MedicineThe University of PennsylvaniaPhiladelphiaPAUSA
3. Department of Medicine, Perelman School of MedicineThe University of PennsylvaniaPhiladelphiaPAUSA
4. Departments of Medicine and Orthopaedic SurgeryUniversity of MichiganAnn ArborMIUSA
5. Department of Biomedical SciencesTexas A&M University Baylor College of DentistryDallasTXUSA
6. Department of Genetics, Perelman School of MedicineThe University of PennsylvaniaPhiladelphiaPAUSA