Phillips, C., Parthaláin, N., Syed, Y., Deganello, D., Claypole, T., & Lewis, K. (2014). Short-Term Intra-Subject Variation in Exhaled Volatile Organic Compounds (VOCs) in COPD Patients and Healthy Controls and Its Effect on Disease Classification. Metabolites, 4(2), pp. 300-318. doi:10.3390/metabo4020300

Phillips, Christopher, Neil Parthaláin, Yasir Syed, Davide Deganello, Timothy Claypole, and Keir Lewis. "Short-Term Intra-Subject Variation in Exhaled Volatile Organic Compounds (VOCs) in COPD Patients and Healthy Controls and Its Effect On Disease Classification." Metabolites 4, no. 2 (2014): 300-318.

Phillips, Christopher, et al. "Short-Term Intra-Subject Variation in Exhaled Volatile Organic Compounds (VOCs) in COPD Patients and Healthy Controls and Its Effect On Disease Classification." Metabolites 4.2 (2014): 300-318.