The Cerebrospinal Fluid Profile of Cholesterol Metabolites in Parkinson’s Disease and Their Association With Disease State and Clinical Features oleh William J. Griffiths, Jonas Abdel-Khalik, Sarah F. Moore, Ruwani S. Wijeyekoon, Peter J. Crick, Eylan Yutuc, Krista Farrell, David P. Breen, David P. Breen, David P. Breen, Caroline H. Williams-Gray, Spyridon Theofilopoulos, Ernest Arenas, Miles Trupp, Roger A. Barker, Roger A. Barker, Yuqin Wang