They estimate that the exposure in these settings causes mild mental retardation in roughly six out of every 1,000 people. (scientificamerican.com)
They also used World Health Organization spreadsheets «that would tell us how many people would develop cardiovascular disease or mild mental retardation from those levels,» sayslead author Kevin Chatham - Stephens, a pediatrician at The Mount Sinai Hospital who focuses on environmental health. (scientificamerican.com)
send me some information regarding «effect of peer tutoring on development vocational skills among persons with mild mental retardation» (psychology.jrank.org)