Additional file 1: Table S1.

Population in Hong Kong aged 5 and over by usual language, 1991, 1996, 2001 and 2006. Table S2. Population by nationality in Hong Kong 1991, 1996, 2001 and 2006. Table S3. Population by place of birth in Hong Kong 1961-2006.

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Lau et al. BMC Cancer 2013 13:298   doi:10.1186/1471-2407-13-298