[1] Univ Sao Paulo, Med Sch Ribeirao Preto, Dept Internal Med, Av Bandeirantes 3900, BR-14048900 Ribeirao Preto, SP, Brazil
[2] Univ Sao Paulo, Ctr Cell Based Therapy, Ribeirao Preto, SP, Brazil
[3] Hannover Med Sch, Dept Haematol Haemostasis Oncol & Stem Cell Trans, Hannover, Germany
[4] Harvard Med Sch, Brigham & Womens Hosp, Dept Med, Boston, MA USA