[Association of CLOCK gene T3111C polymorphism with attention deficit hyperactivity disorder and related sleep disturbances in children].

Objective: To examine the association between CLOCK gene T3111C polymorphism with attention deficit hyperactivity disorder (ADHD) and ADHD related sleep disturbances in children.

Methods: One hundred and sixty-six unrelated children with ADHD diagnosed according to DSM-IV criteria and a control group of 150 normal children were enrolled in this study. Parents filled out the Sleep Disturbance Scale for Children (SDSC).

[Risk factors of cognitive impairment after off-pump coronary artery bypass grafting].

Objective: To analyze the risk factors of cognitive impairment after off-pump coronary artery bypass grafting (OPCABG).

Methods: A total of 102 patients [male: 82, age: (65.7 ± 7.