1 Lai K,Pan J,Chen R,et al.Epidemiology of cough in relation to China.Cough,2013,9:18-23. 2 中华医学会儿科学分会呼吸学组慢性咳嗽协作组.中国儿童慢性咳嗽诊断与治疗指南(2013年修订).中华儿科杂志,2014,52:184-188. 3 Chang AB,Robertson CF,Van Asperen PP,et al.A multicenter study on chronic cough in children :burden and etiologies based on a standardized management pathway.Chest,2012,142:943-950. 4 Usta Guc B,Asilsoy S,Durmaz C.The assessment and management of chronic cough in children according to the British Thoracic Society guidelines:descriptive,prospective,clinical trial.Clin Respir J,2014,8:330-337. 5 Mccrory DC,Coeytaux RR,Jr WSY,et al.Acknowledgments - Assessment and Management of Chronic Cough - NCBI Bookshelf.Agency for Healthcare Research & Quality,2013. 6 Narang R,Bakewell K,Peach J,et al.Bacterial distribution in the lungs of children with protracted bacterial bronchitis.PLoS One,2014,9:e108523. 7 De Schutter I,De Wachter E,Crokaert F,et al.Microbiology of bronchoalveolar lavage fluid in children with acute nonresponding or recurrent community-acquired pneumonia:identification of nontypeable Haemophilus influenzae as a major pathogen.Clin Infect Dis,2011,52:1437-1444. 8 Chang AB,Oppenheimer JJ,Weinberger MM,et al.Management of Children With Chronic Wet Cough and Protracted Bacterial Bronchitis:CHEST Guideline and Expert Panel Report.Chest,2017,151:884-890. 9 Chang AB,Upham JW,Masters IB,et al.Protracted bacterial bronchitis:The last decade and the road ahead.Pediatr Pulmonol,2016,51:225-242. 10 Morey MJ,Cheng AC,McCallum GB.Accuracy of cough reporting by carers of Indigenous children.J Paediatr Child Health,2013,49:E199-203. 11 Karabel M,Kelekçi S,Karabel D.The evaluation of children with prolonged cough accompanied by American College of Chest Physicians guidelines.Clin Respir J,2014,8:152-159. 12 Priftis KN,Litt D,Manglani S,et al.Bacterial bronchitis caused by Streptococcus pneumoniae and nontypable Haemophilus influenzae in children:the impact of vaccination.Chest,2013,143:152-157. 13 Gulliford M,Latinovic R,Charlton J,et al.Selective decrease in consultations and antibiotic prescribing for acute respiratory tract infections in UK primary care up to 2006.J Public Health (Oxf),2009,31:512-520. 14 Donnelly D,Critchlow A.Outcomes in children treated for persistent bacterial bronchitis.Thorax,2007,62:80-84.15 Pritchard MG,Lenney W.Outcomes in children with protracted bacterial bronchitis confirmed by bronchoscopy.Arch Dis Child,2015,100:112-113. 16 Wang Y,Hao C,Chi F,et al.Clinical characteristics of protracted bacterial bronchitis in Chinese infants.Sci Rep,2015,5:13731-13741. 17 Wurzel DF,Marchant JM,Yerkovich ST,et al.Prospective characterization of protracted bacterial bronchitis in children.Chest,2014,145:1271-1278. 18 Goyal V,Grimwood K,Marchant J,et al.Pediatric bronchiectasis:No longer an orphan disease.Pediatr Pulmonol,2016,51:450-469. 19 Kompare M.Protracted bacterial bronchitis in young children:association with airway malacia.J Pediatr,2012,160:88-92. 20 Goyal V,Grimwood K,Marchant J,et al.Does failed chronic wet cough response to antibiotics predict bronchiectasis?Arch Dis Child,2014,99:522-525. 21 Marchant JM,Masters IB,Taylor SM,et al.Evaluation and outcome of young children with chronic cough.Chest,2006,129:1132-1141. 22 Marchant J,Masters IB,Champion A,et al.Randomised controlled trial of amoxycillin clavulanate in children with chronic wet cough.Thorax,2012,67:689-693. 23 Narang R,Bakewell K,Peach J,et al.Bacterial distribution in the lungs of children with protracted bacterial bronchitis.PLoS One,2014,9:e108523. 24 Hare KM,Smith-Vaughan HC,Chang AB,et al.Propensity of pneumococcal carriage serotypes to infect the lower airways of children with chronic endobronchial infections.Vaccine,2017,35:747-756. 25 Wurzel DF,Marchant JM,Yerkovich ST,et al.Protracted Bacterial Bronchitis in Children:Natural History and Risk Factors for Bronchiectasis.Chest,2016,150:1101-1108.