A randomised dose-ranging study of tiotropium Respimat? in children with symptomatic asthma despite inhaled corticosteroids.
Vogelberg C, Moroni-Zentgraf P, Leonaviciute-Klimantaviciene M, Sigmund R, Hamelmann E, Engel M, Szefler S. A randomised dose-ranging study of tiotropium Respimat? in children with symptomatic asthma despite inhaled corticosteroids. Respir Res. 2015 Feb 07; 16:20.