TY - STAND AU - C. Meier AU - H. Jick BT - Thorax M1 - 7 PY - 1997 SP - 612 EP - 7 T2 - Thorax TI - Drug use and pulmonary death rates in increasingly symptomatic asthma patients in the UK VL - 52 SN - 0040-6376 (Print) 0040-6376 ER -