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Jansen, Karl L.R.; Prast, Colin J. (1988). "Ethnopharmacology of kratom and the Mitragyna alkaloids". Journal of Ethnopharmacology. 23 (1): 115–9. doi:10.1016/0378-8741(88)90121-3. PMID3419199.
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Neerman, Michael F.; Frost, Randall E.; Deking, Janine (2013). "A Drug Fatality Involving Kratom". Journal of Forensic Sciences. 58: S278–9. doi:10.1111/1556-4029.12009. PMID23082895.
Holler, J. M.; Vorce, S. P.; McDonough-Bender, P. C.; Magluilo, J.; Solomon, C. J.; Levine, B. (2011). "A Drug Toxicity Death Involving Propylhexedrine and Mitragynine". Journal of Analytical Toxicology. 35 (1): 54–9. doi:10.1093/anatox/35.1.54. PMID21219704.
Kronstrand, R.; Roman, M.; Thelander, G.; Eriksson, A. (2011). "Unintentional Fatal Intoxications with Mitragynine and O-Desmethyltramadol from the Herbal Blend Krypton". Journal of Analytical Toxicology. 35 (4): 242–7. doi:10.1093/anatox/35.4.242. PMID21513619.
Suhaimi FW, Yusoff NH, Hassan R, Mansor SM, Navaratnam V, Müller CP, Hassan Z (2016). "Neurobiology of Kratom and its main alkaloid mitragynine". Brain Res Bull. Mar 25. doi:10.1016/j.brainresbull.2016.03.015. PMID27018165.CS1 maint: uses authors parameter (link)
Chittrakarn, S; Keawpradub, N; Sawangjaroen, K; Kansenalak, S; Janchawee, B (2010). "The neuromuscular blockade produced by pure alkaloid, mitragynine and methanol extract of kratom leaves (Mitragyna speciosa Korth.)". Journal of Ethnopharmacology. 129 (3): 344–349. doi:10.1016/j.jep.2010.03.035. PMID20371282.
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Ward, Jeanine; Rosenbaum, Christopher; Hernon, Christina; McCurdy, Christopher R.; Boyer, Edward W. (2011). "Herbal Medicines for the Management of Opioid Addiction". CNS Drugs. 25 (12): 999–1007. doi:10.2165/11596830-000000000-00000. PMID22133323.
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