An improved method for the determination of {increment}9-tetrahydrocannabinol, cannabinol and cannabidiol in hair by liquid chromatography-tandem mass spectrometry

1. Míguez-Framil, M.
2. Cocho, J.T.
3. Tabernero, M.J.
4. Bermejo, A.M.
5. Moreda-Piñeiro, A.
6. Bermejo-Barrera, P.