Long-acting β-agonists and steroids – trial experienceLÖfdahl, C-GAuthor informationDepartment of Respiratory Medicine, Lund University Hospital, Lund, SwedenCorrespondence to: Dr. C.-G.Löfdahl,Department of Respiratory Medicine, Lund University Hospital, SE-22185 Lund, Sweden.Clinical & Experimental Allergy Reviews 1(1):p 18-22, June 2001.Copyright © 2001 Blackwell Science Ltd.