TY - JOUR T1 - Selection in cohorts and pattern of causes of death. JF - Journal of Epidemiology and Community Health JO - J Epidemiol Community Health SP - 75 DO - 10.1136/jech.35.1.75 VL - 35 IS - 1 AU - H T Waaler Y1 - 1981/03/01 UR - http://jech.bmj.com/content/35/1/75.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -