females have been attributed to the implementation of the National Tobacco Control Program, which started in 1989 (Ngoan, 2006a). Similarly, incidence of penis cancer has significantly decreased, it used to be frequently reported in the early case series within 1950s-1960s, later it was rarely seen (Joyeux and Nguyen, 1950; Luong and Pham, 1964; Anh et al., 1993). The description of changes in cancer patterns over time is of vital interest in cancer control (Coleman et al., 1993). The…
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