Airway Hyper-responsiveness Study In Asthma Using Salmeterol/Fluticasone Propionate Combination Product

A multi-centre, randomised, double blind, stratified, and parallel group study to evaluate whether a treatment strategy based on aiming for 'Total control' results in better airway hyper-responsiveness than a treatment strategy based on maintaining the treatment level at which 'Well-controlled' asthma was achieved.