[1] Capital Med Univ, Beijing Childrens Hosp, Natl Ctr Childrens Hlth, Pediat Intens Care Unit, Beijing, Peoples R China
[2] Capital Med Univ, Beijing Childrens Hosp, China Natl Clin Res Ctr Resp Dis, Natl Ctr Childrens Hlth,Dept Resp, Beijing, Peoples R China
[3] Capital Med Univ, Beijing Childrens Hosp, Natl Ctr Childrens Hlth, Dept Intervent Pulmonol, Beijing, Peoples R China
[4] Capital Med Univ, Beijing Childrens Hosp, Natl Ctr Childrens Hlth, Dept Otolaryngol,Beijing Key Lab Pediatr Dis Otola, Beijing, Peoples R China
[5] Capital Med Univ, Beijing Childrens Hosp, Imaging Ctr, Natl Ctr Childrens Hlth, Beijing, Peoples R China
[6] Capital Med Univ, Beijing Childrens Hosp, Natl Ctr Childrens Hlth, Dept Resp, 56 Nanlishi Rd, Beijing 100045, Peoples R China