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2. Svensk läkemedelsstatistik 1985;Apoteksbolaget,1986
3. Drug Utilization Studies—At Overall, Prescription and Patient Levels;Baksaas,1980
4. A cross-sectional comparison of anti-anxiety/sedative drug use;Balter;Current Medical Research and Opinion,1984
5. Prescribing of psychotropic medication by primary care physicians and psychiatrists;Beardsley;Archives of General Psychiatry,1988