@misc{oai:repo.qst.go.jp:00067631,
 author = {Imai, Reiko and 今井 礼子},
 month = {Oct},
 note = {The 39th Meeting of the Particle Therapy Cooperative Group},
 title = {The preliminary report of carbon ion radiotherapy for unresectable sacral chordomas},
 year = {2003}
}