Simultaneous measurements of N1-methylnicotinamide, creatinine, isobutyryl-L-carnitine by liquid chromatograph with high resolution mass spectrometry for assessing the activities of multiple renal cationic transporters in first-in-human clinical trial. Issue 1 (January 2019) - Luo, Lina; Rodrigues, A. David; Kay, Jared; Ramanathan, Ragu