TY - JOUR A1 - Wadsworth, M. A1 - Kuh, D. A1 - Richards, M. A1 - Hardy, R. T1 - Cohort profile: The 1946 National Birth Cohort (MRC National Survey of Health and Development Y1 - 2006 DO - 10.1093/ije/dyi201 VL - 35 IS - 1 ER -