DEPARTMENT OF HEALTH - Membership of District Health Authorities May 1981 - 19 pages Summary . Background . Constitution and Membership of DHAs . Tenure of Office . Composition of DHAs . Consultations on and Qualifications for Membership . Criteria for Appointment . Trade Union Membership . Professional Members . Employees of Health Authorities Appointments and Other Actions . Role of the DHA and its Members . Model Standing Orders for Regional and District Health Authorities Admission to Health Authority Meetings . Medical Teaching in the NHS.