Returns a list of all available Serviceline Audiences.
Sample Request
http://external.ws.staywell.com/[SiteName]/Content.svc/GetAllServicelineAudiences
Sample Result XML
<?xml version="1.0" encoding="utf-8" ?>
<ServicelineAudiences>
<Audience>Adult</Audience>
<Audience>Pediatric</Audience>
</ServicelineAudiences>