Lee, D K C Cross tolerance to salbutamol occurs independently of beta2 adrenoceptor genotype-16 in asthmatic patients receiving regular formoterol or salmeterol. [electronic resource] - Thorax Aug 2004 - 662-7 p. digital Publication Type: Clinical Trial; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't ISSN: 0040-6376 Standard No.: 10.1136/thx.2003.019059 doi Subjects--Topical Terms: Adrenergic beta-Agonists--therapeutic useAdultAgedAlbuterol--therapeutic useAsthma--drug therapyBronchodilator Agents--therapeutic useCross-Over StudiesDouble-Blind MethodDrug Tolerance--geneticsEthanolamines--therapeutic useFemaleForced Expiratory Volume--physiologyFormoterol FumarateGenotypeHomozygoteHumansMaleMiddle AgedPeak Expiratory Flow Rate--physiologyReceptors, Adrenergic, beta-2--genetics