Improved lung function and rapid control achieved with the new single inhaler product containing both budesonide and formoterol in asthmatic children aged 4 - 17 years - Vermeulen,J.H.; Simon,G.; Tal,A.; Vit,P.; Cobos,N.; Everara,M.L.; De Boeck,C.; Peterson,S. (Eur Respir J, 2000)