Plewa, Szymon, et al. “LC-MS/MS/Based/Targeted/Metabolomics/Method/for/Analysis/of/Serum/and/Cerebrospinal/Fluid”. Journal of Medical Science, vol. 88, no. 1, Feb. 2019, pp. 12-20, https://doi.org/10.20883/jms.2019.335.