Development of an online-SPE-LC-MS/MS method for 26 hydroxylated polyunsaturated fatty acids as rapid targeted metabolomics approach for the LOX, CYP, and autoxidation pathways of the arachidonic acid cascade. Ostermann, A.I., Willenberg, I., Weylandt, K.H. and Schebb, N.H. Chromatographia 78 (5-6): 415-428. 1 March 2015