1: Nishikawa M, Tatsuno M, Suzuki S, Tsuchihashi H. Analysis of methylbenactyzium bromide in human urine by thin-layer chromatography and pyrolysis gas chromatography. Forensic Sci Int. 1991 Mar;49(2):197-203. doi: 10.1016/0379-0738(91)90080-3. 51(1):131-8. doi: 10.1016/0379-0738(91)90213-3. 21(3):198-203. Chinese.