<p>Primary care is defined as a regular source of care characterised by continuity, comprehensiveness, co-ordination, availability and convenience (Donaldson et al 1996, Stewart et al 1997). Lack of such a regular source of care is associated with increased reliance on emergency department (ED) services (Grossman et al 1998, Haugh 2002, Oster and Bindman 2003).</p>