Attention-deficit hyperactivity disorder (ADHD) affects approximately 3%-5% of children in the United States. In the current psychiatric nomenclature, ADHD comprises three subtypes: inattentive, hyperactive-impulsive, and combined. In this study, we used four analytic strategies to examine the association and linkage of the dopamine transporter gene (DAT1) and ADHD. Our sample included 122 chil...

Distance-hereditary graphs (sensu Howorka) are connected graphs in which all induced paths are isometric. Examples of such graphs are provided by complete multipartite graphs and ptolemaic graphs. Every finite distance-hereditary graph is obtained from K, by iterating the following two operations: adding pendant vertices and splitting vertices. Moreover, distance-hereditary graphs are character...

McNeill et al1 reported a patient whose sarcoidosis and lung cancer coexisted, raising the question of causality and, secondarily, of cause vs effect. The Ptolemaic (sarcocentric) viewpoint, advanced by Brincker and Wilbek,2 posits that the disease sarcoidosis can induce the development of solid neoplasms by an unspecified mechanism. The Copernican (oncocentric) viewpoint posits that sarcoidosi...

athletes: 2016 evidence summary from the IOC expert group meeting, Lausanne. Part 1—exercise in women planning pregnancy and those who are pregnant Kari Bø, Raul Artal, Ruben Barakat, Wendy Brown, Gregory A L Davies, Michael Dooley, Kelly R Evenson, Lene A H Haakstad, Karin Henriksson-Larsen, Bengt Kayser, Tarja I Kinnunen, Michelle F Mottola, Ingrid Nygaard, Mireille van Poppel, Britt Stuge, K...

This study examined the relative roles of aggression and other dysregulated behaviors in the prediction of adolescent peer problems and antisocial behavior. The social adjustment of 145 boys studied first in Grades 3-6 was assessed again 4 years later in Grades 7-10. At each time, peer ratings of aggressive, hyperactive-disruptive, withdrawn, and irritable-inattentive behaviors were collected. ...