Cite
MLA Citation
Bettina Zinka et al.. “Can a threshold for 11‐nor‐9‐carboxy‐Δ9 ‐tetrahydrocannabinol in hair be derived when its respective concentration in blood serum indicates regular use?.” Drug testing and analysis, vol. 11, no. 2, 2019, pp. 325–330. http://access.bl.uk/ark:/81055/vdc_100084063619.0x000010