1. United Nations Office on Drugs and CrimeWorld drug report 2021.https://www.unodc.org/unodc/en/data-and-analysis/wdr2021.html. Accessed September 21 2021.
2. United Nations Office on Drugs and Crime.Current NPS threats volume III.https://www.drugsandalcohol.ie/33263/1/Current_NPS_Threats_Vol.3.pdf. Accessed September 21 2021.
3. United Nations Office on Drugs and Crime.Early warning advisory (EWA) on new psychoactive substances (NPS).https://www.unodc.org/LSS/Home/NPS. Accessed September 21 2021.
4. Taiwan Ministry of Health and Welfare.List of new psychoactive substances (NPS) detected in Taiwan.https://www.fda.gov.tw/TC/site.aspx?sid=9958&r=155488991. Accessed September 21 2021.
5. Synthetic cathinone poisoning from ingestion of drug-laced “instant coffee packets” in Taiwan