1. Genetic analysis of Tourette syndrome suggesting a major gene;Baron;Am J Hum Genet,1981
2. A Danish twin study of manic-depressive disorders;Bertelson;Br J Psychiatry,1977
3. Twin and family studies of anxiety, phobic and obsessive disorders;Carey,1981
4. Twin Studies of Drinking Behavior and Obsessionality;Clifford,1983
5. Genetic and environmental influences on obsessional traits and symptoms;Clifford;Psychol Med,1984