Bibliographical noteFunding Information:
Teresa Kivisto Bekkala, Meghan Flesher, and Marna Ericson provided valuable assistance with sample collection and management. This work was supported in part by the National Institute of Arthritis and Musculoskeletal and Skin Diseases of the National Institutes of Health under award numbers R01 AR059947-01A1 and R01 AR063070 . The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health. Additional support was provided by the Department of Defense (USAMRAA/DOD Department of the Army W81XWH-12-1-0609 and USAMRAA/DOD W81XWH-10-1-0874 ), DebRA , the Jackson Gabriel Silver Fund , the Epidermolysis Bullosa Medical Research Fund , and the Children‘s Cancer Research Fund, Minnesota .