[1] Eurocord Hop St Louis, Paris, France
[2] Hop Robert Debre, F-75019 Paris, France
[3] Hop Enfants La Timone, Marseille, France
[4] Vall Hebron Hosp, Barcelona, Spain
[5] Univ Roma La Sapienza, Rome, Italy
[6] Nino Jesus Childrens Hosp, Madrid, Spain
[7] Amaral Carvalho Hosp, Sao Paulo, Brazil
[8] Hosp Infantil Fe, Valencia, Spain
[9] Sydney Childrens Hosp, Ctr Childrens Canc & Blood Disorders, Sydney, NSW, Australia
[10] Bambino Gesu Pediat Hosp, Rome, Italy
[11] St Anna Childrens Hosp, BMT Unit, Vienna, Austria