A Molecular Clock Infers Heterogeneous Tissue Age Among Patients with Barrett's Esophagus. - Kit Curtius; Chao-Jen Wong; William D. Hazelton; Andrew M. Kaz; Amitabh Chak; Joseph E. Willis; William M. Grady; E. Georg Luebeck (PLoS Comput. Biol., 2016)