Richards, M.;
Shipley, B.;
Fuhrer, R.;
Wadsworth, M.E.J.;
(2004)
Cognitive ability in childhood and cognitive decline in mid-life: longitudinal birth cohort study.
BMJ
, 328
(7439)
pp.552 - 554B.
10.1136/bmj.37972.513819.EE.