Correspondence to:
1 Dr Marzieh Ebrahimi, Royan Institute for Stem Cell Biology and Technology, 2 Hafez Alley, Banihashem, Resalat, Tehran 16635-148, Iran
E-mail:m.ebrahimi@royan-rc.ac.ir, Phone: +98 21 22306485, Fax: + 98 21 22413790
2Department of Hematology and Blood Banking, Faculty of Allied Medicine, Iran University of Medical Sciences, Tehran, Iran
E-mail: safa.m@iums.ac.ir, Phone: +98 21 88702108-86701, Fax: + 98 21 88622532