@phdthesis{oai:niigata-u.repo.nii.ac.jp:02000309,
 author = {Yamada, Saki and 山田, 沙季},
 month = {2022-04-04, 2022-04-04},
 note = {新大院博(医)第1004号},
 school = {新潟大学, Niigata University},
 title = {Timing of surgery to treat ulcerative colitis : An investigation focused on Japanese adults},
 year = {}
}