Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) K-C Yoon and I-Y Jeong and S-K Im and Y-G Park and H-J Kim and J Choi,Therapeutic effect of umbilical cord serum eyedrops for the treatment of dry eye associated with graft-versus-host disease,Bone Marrow Transplantation,0268-3369,Springer Science and Business Media LLC,2007-01-08,39,4,231-235,https://cir.nii.ac.jp/crid/1360857597164256000,https://doi.org/10.1038/sj.bmt.1705566