1. Department of Chemistry, Technical University of Denmark, Kemitorvet 207, Kongens Lyngby 2800, Denmark
2. Lipidomics Core Facility, Danish Cancer Institute, Strandboulevarden 49, Copenhagen 2100, Denmark
3. Nuffield Department of Rheumatology, Orthopaedics, and Musculoskeletal Sciences, Botnar Research Centre, University of Oxford, Headington, Oxford OX3 7LD, UK