LC-MS/MS based targeted metabolomics method for analysis of serum and cerebrospinal fluid (S. Plewa, P. Dereziński, J. Florczak-Wyspiańska, K. Popławska-Domaszewicz, W. Kozubski, B. Sokół, R. Jankowski, J. Matysiak, & Z. J. Kokot , Trans.). (2019). Journal of Medical Science, 88(1), 12-20. https://doi.org/10.20883/jms.2019.335