enquête (4) République populaire de Chine (4) Percentage (4) Life expectancy (4) Age (4) Population (4) Longevity (4) Health (4) tabagisme (3) mode de vie (3) information (3) histoire (3) santé (3) famille (3) éducation (3) âge (3) profession (3) Education (3) History (3) Birthplace (3) Children (3) Aging (3) Caregivers (3) Smoking (3) Population (3) Parents (3) Marriage (3) Longevity (3) Life (3) History (3)