https://www.sggg.ch/fileadmin/user_upload/Dokumente/3_Fachinformationen/1_Expertenbriefe/Fr/EB_87_Stockage_de_cellules_souches_de_sang_de_cordon_ombilical_public.pdf 2024 Switzerland guideline Nano Public cord blood MATCH Arm EAY131-N No Umbilical Cord Blood N stem cell Stem Cell fetal blood stem cells Neither Agree or Disagree Murine Stem Cells Newton cord blood Hoarding Storage expert testimony expert opinion N Category Tumor to Normal umbilical cord Signal to Noise Ratio blood cells