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Background (Chinese only) Research team members (Chinese only) Contact information (Chinese only) Research design (Chinese only) Demographic profile of respondents (Chinese only) Research findings (Chinese only) Frequency tables (Chinese pdf only) Full questionnaire (Chinese pdf only) Presentation (Prepared by project sponsor) Appendix1 : press release prepared by project sponsor Appendix2 : frequency for sample of respondents with worsening headache and the overall sample (Chinese pdf only) Appendix3 : cross tabulation results (Chinese pdf only)