The objective was to investigate the potential use of pepsin and carbonic anhydrase isoenzyme III (CA-III) as diagnostic markers for laryngopharyngeal reflux disease.
Center for Voice and Swallowing Disorders, Department of Otolaryngology, Wake Forest University Health Sciences, Medical Center Boulevard, Winston-Salem, NC 27157-1034, U.S.A. njohnsto@wfubmc.edu