RT Journal Article SR Electronic T1 Detection of pepsin in sputum: a rapid and objective measure of airways reflux JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 339 OP 341 DO 10.1183/13993003.00827-2015 VO 47 IS 1 A1 Vicki Strugala A1 Andrew D. Woodcock A1 Peter W. Dettmar A1 Shoaib Faruqi A1 Alyn H. Morice YR 2016 UL http://erj.ersjournals.com/content/47/1/339.abstract AB