One of the few cannabis trials on humans conducted by;Department of Biochemistry and Molecular Biology I, School of Biology, Complutense University, Madrid 28040, Spain
2Department of Neurosurgery, Hospital Universitario de Canarias, La Laguna, Tenerife 38320, Spain

A pilot clinical study of [Delta]9-tetrahydrocannabinol in patients with recurrent glioblastoma multiforme.
The pdf can be viewed here courtesy of British Journal of Cancer.