"Fertility treatment and risk of childhood and adolescent mental disorders: register based cohort study"
BMJ Jul 5
http://www.bmj.com/content/347/bmj.f3978
"Conclusions There was a small increase in the incidence of mental disorders in children born after ovulation induction/intrauterine insemination. Children born after in vitro fertilisation/intracytoplasmic sperm injection were found to have overall risk comparable with children conceived spontaneously."