Simultaneous Determination and Stability Analysis of Ten New Psychoactive Substances including Synthetic Cathinones, Phenethylamines, and Ketamine Substitutes in Urine Using Liquid... oleh Feng-Shuo Yang, Hei-Hwa Lee, Li-Ping Tseng, Yung-Hung Lee, Yung-Sheng Lan, Yi-Cheng Lee, Yi-Cheng Chou, Yi-Ching Lin