1. Musculoskeletal Regeneration Group, AO Research Institute, Platz, Switzerland.
2. Connective Tissue Biology Research Group, Cardiff School of Biosciences, Cardiff, United Kingdom.
3. RJAH Orthopaedic Hospital, Keele University Mass Spectrometry Facility, Oswestry, United Kingdom.
4. Life and Health Sciences, Aston University, Birmingham, United Kingdom.
5. Spinal Studies & Institute for Science and Technology in Medicine, RJAH Orthopaedic Hospital, Keele University, Oswestry, United Kingdom.