1. Department of Psychology Brigham Young University Provo Utah USA
2. Laboratory of Clinical Studies, National Institute on Alcohol Abuse and Alcoholism National Institutes of Health Bethesda Maryland USA
3. Section of Comparative Behavioral Genomics, National Institute on Alcohol Abuse and Alcoholism National Institutes of Health Rockville Maryland USA
4. Section of Comparative Ethology, Eunice Shriver Kennedy National Institute of Child Health and Human Development National Institutes of Health Poolesville Maryland USA