... Highway,Crawley, WA, 6009, Australia.Authors’ contributionsQM and CDJH participated in the conception and design of the overallstudy, and formulation of analysis plan. QM researched data and ... registration atstudy entry. Age is calculated from date of birth and study entry date. For MHCs, the study entry date was 1January 1990 for patients recorded in the MHR before 1January 1990, or the ... used the MHR for selection of our mental health cohort asdid the previous Duty to Care study [8] and GP utilisa-tion study [11], thus ensuring continuity and integrity of our investigations and...