Associations of combined lifestyle index with migraine prevalence and headache frequency: a cross-sectional study from the MECH-HK study.

"Declarations Ethics approval and consent to participateEthical approval was granted by the Human Subjects Research Ethics Committee at the Hong Kong Polytechnic University (Ref.: HSEARS20171229004). All participants provided written informed consents. Consent for publicationNot applicable. Competing interestsThe authors declare no competing interests. Competing interests The authors declare no competing interests."

"Funding This study was supported by the Early Career Scheme, Research Grants Council of the University Grants Committee: HK (grant number: 25101418) and General Research Fund, Research Grants Council of the University Grants Committee: HK (grant number: 15100822). The funders had role in data collection, but no role in study design, data analysis, data interpretation, or writing of the manuscript."