Obsessive-compulsive symptoms in sibling pairs concordant for obsessive-compulsive disorder - Chacon, Priscila; Rosario-Campos, Maria Conceição; Pauls, David L.; Hounie, Ana Gabriela; Cúri, Mariana; Akkerman, Fernando; Shimabukuro, Fabiana Harumi; Mathis, Maria Alice de; Lopes, Antonio Carlos; Hasler, Gregor; Miguel, Eurípedes Constantino (American Journal of Medical Genetics - part B, 2007)