Gibson P.G., Henry R.L., Shah S., Powell H., Wang H. Migration to a western country increases asthma symptoms but not eosinophilic airway inflammation (англ.) // Pediatric Pulmonology[англ.] : journal. — 2003. — September (vol. 36, no. 3). — P. 209—215. — doi:10.1002/ppul.10323. — PMID12910582.
Thavagnanam S., Fleming J., Bromley A., Shields M.D., Cardwell, C.R. A meta-analysis of the association between Caesarean section and childhood asthma (англ.) // Clin. And Exper. Allergy : journal. — 2007. — Vol. online ahead of print. — P. 629. — doi:10.1111/j.1365-2222.2007.02780.x.
Gibson P.G., Henry R.L., Shah S., Powell H., Wang H. Migration to a western country increases asthma symptoms but not eosinophilic airway inflammation (англ.) // Pediatric Pulmonology[англ.] : journal. — 2003. — September (vol. 36, no. 3). — P. 209—215. — doi:10.1002/ppul.10323. — PMID12910582.
Gibson P.G., Henry R.L., Shah S., Powell H., Wang H. Migration to a western country increases asthma symptoms but not eosinophilic airway inflammation (англ.) // Pediatric Pulmonology[англ.] : journal. — 2003. — September (vol. 36, no. 3). — P. 209—215. — doi:10.1002/ppul.10323. — PMID12910582.