| 1. | National institutes of health,National heart,Lung and Blood Institute.Global strategy for asthma management and prevention.Revised,2006,http://www.ginasthma.com/ Guidelineitem.asp. | 
				                                                        
				                                                            
				                                                                | 2. | Bateman ED,Boushey HA,Bousquet J,et al.Can guideline-defined asthma control be achieved?The Gaining Optimal Asthma ControL study.Am J Respir Crit Care Med,2004,170:836-844. | 
				                                                        
				                                                            
				                                                                | 3. | van den Toorn LM,Overbeek SE,de Jongste JC,et al.Airway inflammation is present during clinical remission of atopic asthma.Am J Respir Crit Care Med,2001,164:2107-2113. | 
				                                                        
				                                                            
				                                                                | 4. | Bateman ED,Jacques L,Goldfrad C,et al.Asthma control can be maintained when fluticasone propionate/salmeterol in a single inhaler is stepped down.J Allergy Clin Immunol,2006,117:563-570. | 
				                                                        
				                                                            
				                                                                | 5. | Woolcock AJ,Jenkins CR.Assessment of bronchial responsiveness as a guide to prognosis and therapy in asthma.Med Clin North Am,1990,74:753-765. | 
				                                                        
				                                                            
				                                                                | 6. | Rabe KF,Atienza T,Magyar P,et al.Effect of budesonide in combination with formoterol for reliever therapy in asthma exacerbations:a randomised controlled,double-blind study.Lancet,2006,368:744-753. |