The members of the Montelukast Study Group were Andre Cartier, Montreal, Canada; Ken Chapman, Toronto, Canada; Thomas B Edwards, Albany, NY, USA; Albert F Finn Jr, North Charleston, SC, USA; J Mark Fitzgerald, Vancouver, Canada; Philippe Godard, Montpellier, France; Tari Haahtela, Helsinki, Finland; Yngve Hornblad, Malmö, Sweden; Elliot Israel, Boston, MA, USA; William Klaustermeyer, Los Angeles, CA, USA; Claes-Goran Löfdahl, Lund, Sweden; Andreas Meyer, Hamburg, Germany; Harold Nelson, Denver, CO, USA; Michael J Noonan, Portland, OR, USA; David S Pearlman, Aurora, CO, USA; Andrew J Pedinoff, Princeton, NJ, USA; Bruce Prenner, San Diego, CA, USA; Leif Rosenhall, Huddinge, Sweden; Anthony Scardella, New Brunswick, NJ, USA; Bengt-Eric Skoogh, Gothenburg, Sweden; A M J Wever, Netherlands; Richard White, Sacramento, CA, USA; James D Wolfe, San Jose, CA, USA.