1. Terminology and classification of cerebral palsy;Bax;Dev Med Child Neurol,1964
2. Birthweight, gestational age and the cerebral palsies;Stanley,1984
3. Annual summary of vital statistics—1984;Wegman;Pediatrics,1985
4. A study of the association of factors of pregnancy and parturition with the development of cerebral palsy. A preliminary report;Lilienfeld;Am J Hyg,1951
5. Decline in neonatal mortality 1968–1977: better babies or better care;David;Pediatrics,1983