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Age-specific probabilities of smoking initiation among 3 Italian birth cohorts: 1940–1949 for men (a) and women (b), 1950–1959 for men (c) and women (d), and 1960–1969 for men (e) and women (f).
Note. In 2000, data were available up to age 50 years for the 1950–1959 cohort and up to age 40 years for the 1960–1969 cohort.
