Cite
APA Citation
Auffarth, B., de Monchy, J. G., van der Mark, T. W., Postma, D. S., & Koëter, G. H. (1991). citric acid cough threshold and airway responsiveness in asthmatic patients and smokers with chronic airflow obstruction.. Thorax, 46(9), 638–642. http://access.bl.uk/ark:/81055/vdc_100135551033.0x000030