Here are links to known Facebook groups worldwide. These are all private groups and you will need to ask for permission to join.
HSCT Hematopoietic Stem Cell Transplant – MS & Autoimmune Diseases – https://www.facebook.com/groups/149103351840242/
Russia HSCT for MS & Autoimmune Diseases – https://www.facebook.com/groups/404629779644453/?ref=br_rs
Israel HSCT for MS and Other Autoimmune Disease https://www.facebook.com/groups/IsraelHSCTMSAUTOForum/?ref=br_rs
United Kingdom – https://www.facebook.com/groups/ukhsct
Chicago HSCT Stem Cell Transplant Study – Official Patient Run – Dr. Burt -https://www.facebook.com/groups/burthsct/