2Martinez FD. Development of wheezing disorders andasthma in preschool children [J ].Pediat rics , 2002,109(2 ) : 362.
3Bisgaard H. Study Group on Montelukast and RespiratorySyncytial Virus. A randomized trial of montelukast in respiratory syncytial virus postbronchiolitis [J]. Am J Respir Crit Care Med, 2003,167(3 ) :379-383.