Do Phenotypic Characteristics, Parental Psychopathology, Family Functioning, and Environmental Stressors Have a Role in the Response to Methylphenidate in Children With Attention-Deficit/Hyperactivity Disorder?: A Naturalistic Study From a Developing Country. - Chazan, Rodrigo; Borowski, Carolina; Pianca, Thiago; Ludwig, Henrique; Rohde, Luis Augusto; Polanczyk, Guilherme (Journal of Clinical Psychopharmacology, 2011)