Cite
MLA Citation
Colin L Robinson et al.. “The Peru Urban versus Rural Asthma (PURA) Study: methods and baseline quality control data from a cross-sectional investigation into the prevalence, severity, genetics, immunology and environmental factors affecting asthma in adolescence in Peru.” BMJ open, vol. 2, no. 1, 2012, p. . http://access.bl.uk/ark:/81055/vdc_100137783093.0x000005