Karkowski, L M

Virginia Institute for Psychiatric and Behavioral Genetics, Medical College of Virginia, Richmond, Virginia, USA

Title	Year	PMID
Illicit psychoactive substance use, heavy use, abuse, and dependence in a US population-based sample of male twins.	2000	10711912
Multivariate assessment of factors influencing illicit substance use in twins from female-female pairs.	2000	11054775