Bruton A, Holgate ST (May 2005). "Hypocapnia and asthma: a mechanism for breathing retraining?". Chest. 127 (5): 1808–11. doi:10.1378/chest.127.5.1808. PMID15888863.
Bruton A, Holgate ST (May 2005). "Hypocapnia and asthma: a mechanism for breathing retraining?". Chest. 127 (5): 1808–11. doi:10.1378/chest.127.5.1808. PMID15888863.