PT - JOURNAL ARTICLE AU - R J Simpson AU - K G Power AU - V Swanson TI - Age-band prevalence rates of long-term benzodiazepine users. DP - 1990 Apr 01 TA - British Journal of General Practice PG - 168--169 VI - 40 IP - 333 4099 - http://bjgp.org/content/40/333/168.3.short 4100 - http://bjgp.org/content/40/333/168.3.full SO - Br J Gen Pract1990 Apr 01; 40