PT - JOURNAL ARTICLE AU - S. Hasan Arshad AU - Ramesh Kurukulaaratchy AU - Hongmei Zhang AU - Claire Hodgekiss AU - Wilfried Karmaus AU - John W. Holloway AU - Graham Roberts TI - Assessing small airway function for early detection of lung function impairment AID - 10.1183/13993003.01946-2020 DP - 2020 Jul 01 TA - European Respiratory Journal PG - 2001946 VI - 56 IP - 1 4099 - http://erj.ersjournals.com/content/56/1/2001946.short 4100 - http://erj.ersjournals.com/content/56/1/2001946.full SO - Eur Respir J2020 Jul 01; 56