Snyder Evan Y, Loring Jeanne F
Stem-Cell Resource in the Program in Stem Cells and Regeneration, Developmental and Regenerative Cell Biology, Burnham Institute for Medical Research, La Jolla, Calif, USA.
N Engl J Med. 2006 Jan 26;354(4):321-4. doi: 10.1056/NEJMp058323.