Using trajectory analyses to refine phenotype for genetic association: conduct problems and the serotonin transporter (5HTTLPR).
Sakai JT, Boardman JD, Gelhorn HL, Smolen A, Corley RP, Huizinga D, Menard S, Hewitt JK, Stallings MC. Using trajectory analyses to refine phenotype for genetic association: conduct problems and the serotonin transporter (5HTTLPR). Psychiatr Genet. 2010 Oct; 20(5):199-206.