Comparison of survival, acute toxicities, and dose–volume parameters between intensity‐modulated radiotherapy with or without internal target volume delineation method and three‐di... oleh Yu‐Qin Liang, Sen‐Quan Feng, Wen‐Jia Xie, Qiong‐Zhi Jiang, Yan‐Fen Yang, Ren Luo, Elizabeth A. Kidd, Tian‐Tian Zhai, Liang‐Xi Xie