Krzyzanowski A, Jacoby R, Wilken H
Zentralbl Gynakol. 1984;106(8):506-11.
Report about 419 children with handicaps, born 1966-1980 in one territory. 9.8 per cent of these 419 children have a severe damage, not able for education. 11.9 per cent have a moderate damage and 78.3 per cent a mild one. The mental retardation is combined with damage of senses, cerebral palsy and seizures. Frequency of children with handicaps seems to decrease in the last years.