Outside working hours but between 7am and 7pm: Patients, who are enrolled with primary care physicians in public primary healthcare centres may visit urgent care services within primary healthcare centres. Patients who are enrolled with private practitioners, may visit a substitute practitioner (known to patient in advance). During the night: patients visit urgent care services within primary care centre. There is a grey zone for patient (with private practitioner) what to do, if there is no substitute physician. In such cases patients often go to urgent care services within primary care centres also during the day.