Grant, J. D., Lynskey, M. T., Scherrer, J. F., Agrawal, A., Heath, A. C., & Bucholz, K. K. (2009). A Cotwin-Control Analysis of Drug Use and Abuse/Dependence Risk associated with Early-onset Cannabis Use.

Grant, Julia D., Michael T. Lynskey, Jeffrey F. Scherrer, Arpana Agrawal, Andrew C. Heath, und Kathleen K. Bucholz. A Cotwin-Control Analysis of Drug Use and Abuse/Dependence Risk Associated With Early-onset Cannabis Use. 2009.

Grant, Julia D., et al. A Cotwin-Control Analysis of Drug Use and Abuse/Dependence Risk Associated With Early-onset Cannabis Use. 2009.