Fan, Zhong, Huimin Liu, Fuwei Xie, Qiaoling Xia, Sheng Wang, Zhiyan Chen, and Xiaolan Li. 2015. “Simple, Sensitive and Rapid Ultra-High Performance Liquid Chromatography-Atmospheric Pressure Chemical Ionization Tandem Mass Spectrometry for the Determination of Nicotine and Its Nine Metabolites in Human Urine”. Asian Journal of Chemistry 27 (4):1403-7. https://doi.org/10.14233/ajchem.2015.18048.