[Heavy users: mysterious research].
Roick
Christiane
C
D005858:Germany / Q000453:epidemiology; D006302:Health Services Research; D006801:Humans; D001523:Mental Disorders / Q000453:epidemiology* / Q000628:therapy; D008605:Mental Health Services / Q000706:statistics & numerical data*; D009313:National Health Programs / Q000706:statistics & numerical data*; D014600:Utilization Review