00344nas a2200133   4500000000100000000000100001008004100002100001300043700001200056245009300068300001000161490000700171022003200178       1997                            d1 aC. Meier1 aH. Jick00aDrug use and pulmonary death rates in increasingly symptomatic asthma patients in the UK  a612-70 v52  a0040-6376 (Print) 0040-6376