@misc{10369, author = {M. Frischer and H. Heatlie and S. Chapman and J. Norwood and J. Bashford and D. Millson}, title = {Should the corticosteroid to bronchodilator ratio be promoted as a quality prescribing marker?}, year = {1999}, journal = {Public Health}, volume = {113}, number = {5}, pages = {247-50}, issn = {0033-3506 (Print) 0033-3506}, doi = {10.1038/sj.ph.1900583}, }