The overall aim of the study is to construct a scale that systematically incorporates the callers' perspective in a "degree of worry - scale" and to explore the consequences for the actors in the system - caller, call-handler, and health care system. This will be done through four independent studies. 1. Is it possible to validate "the degree of worry" scale with the software system "Corti"? 2. Does callers' degree of worry relieve after telephone consultation? 3. Does call handlers' awareness of degree of worry affect triage outcome? 4. Is callers' degree of worry a predictor of illness severity?