1. Department of Orthopaedic Surgery; Louisiana State University Health Sciences Center; New Orleans Louisiana
2. Tulane Center for Aging, Department of Medicine; Tulane University School of Medicine; New Orleans Louisiana
3. Department of Diagnostic Imaging; Polish Mother's Memorial Hospital Research Institute; Lodz Poland
4. Department of Biochemistry and Molecular Biology; Tulane University School of Medicine; New Orleans Louisiana
5. Department of Spine Surgery, Oncological Orthopedics and Traumatology; W. Dega University Hospital, Poznan University of Medical Sciences; Poznan Poland
6. Department of Physiotherapy; H. Cegielski State College; Gniezno Poland