Shepheard SR, Karnaros V, Benyamin B, Schultz DW, Dubowsky M, Wuu J, Chataway T, Malaspina A, Benatar M, Rogers ML.  Urinary neopterin: A novel biomarker of disease progression in amyotrophic lateral sclerosis.  Eur J Neurol. 2022 Apr;29(4):990-999.  Epub 2022 Jan 11. [PubMed Link]