Levy, F., Hay, D.A., McStephen, M., Wood, C. & Waldman, I. (1997). ADHD: A category or a continuum ? Genetic analysis of a large scale twin study. Journal of the American Academy of Child and Adolescent Psychiatry, 36, 737-744.
1998 ◽
Vol 37
(11)
◽
pp. 1239
1986 ◽
Vol 25
(6)
◽
pp. iii