OBJECTIVE: The purpose of this review was to examine the literature assessing the
relationship between prenatal exposure to nicotine, alcohol, caffeine, and psychosocial …

Objectives To examine whether infertile couples (with a time to pregnancy of> 12 months),
who conceive naturally or after treatment, give birth to children with an increased prevalence …

The purpose of this study was to determine whether exposure to stressful life events was
associated with changes in levels of circulating cortisol during pregnancy in a population of …

Objectives: We examine whether pregnancy weight (pre-pregnancy body mass index (BMI)
and/or weight gain) is related to core symptoms of attention deficit hyperactivity disorder …

Background: Exposure to radiofrequency fields is increasingly common, but the potential
influence on health has not been thoroughly investigated, especially in children. Between …

Background Survey response rates have been declining over the past decade. The more
widespread use of the Internet and Web-based technologies among potential health survey …

Background: The Strengths and Difficulties Questionnaire (SDQ) has been translated into
the different Nordic languages between 1996 and 2003. During the past few years, SDQs …

Background The Strength and Difficulties Questionnaire (SDQ) is a brief behavioural five
factor instrument developed to assess emotional and behavioural problems in children and …

Severe prenatal stress exposure has been found to increase the risk of neuropsychiatric
conditions like schizophrenia. We examined the risk of attention-deficit/hyperactivity disorder …

PURPOSE: We sought to study the possible association between parental age and autism
spectrum disorder (ASD) by using both a cohort design and a sibling design. METHODS …