A low-cost fiber-optic instrument to colorimetrically detect patients with Barrett's esophagus for early detection of esophageal adenocarcinoma. - Anupam Kumar Dattamajumdar; Patricia L. Blount; John A. Myers; Andrew H. Proctor; Bryan H. Goldman; Brian J. Reid; Roy W. Martin (IEEE Trans. Biomed. Eng., 2001)