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A randomised, open-label, multicentre study compared the efficacy and tolerability of salmeterol 25 microg/fluticasone propionate 125 microg (two puffs, twice daily) delivered via a hydrofluoroalkane metered-dose inhaler (HFA-MDI) and salmeterol 50microg/fluticasone propionate 250 microg (one puff, twice daily) delivered via a Diskus inhaler in Chinese(More)
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