title: Survival data might be inappropriate in the paper by Pinato et al.
authors.affiliation: Department of Radiotherapy, The First Affiliated Hospital, China Medical University, Shenyang, Liaoning 110001, China.
authors.forename: Jianjun
authors.initials: J
authors.lastname: Li
authors.affiliation: Department of Gastroenterology, General Hospital of Shenyang Military Area, Shenyang, Liaoning 110840, China. Electronic address: xingshunqi@126.com.
authors.forename: Xingshun
authors.initials: X
authors.lastname: Qi