ZHAI Chongya, YE Ke, YANG Chengliang, GE Hong, QIU Rongliang, LIU Xinju. Analysis on therapeutic effect of conformal radiotherapy combined with S-1 for elderly patients with esophageal carcinoma[J]. Journal of Clinical Medicine in Practice, 2013, (21): 105-107,113. DOI: 10.7619/jcmp.201321030