Johnson Barbra A, Yaffe Michael, Blackwell T Keith
Department of Pathology, Harvard Medical School and Center for Blood Research, 200 Longwood Ave, Boston, MA 02115, USA.
Massachusetts Institute of Technology, 77 Massachusetts Avenue, E18-580, Cambridge, MA 02139, USA.
ScientificWorldJournal. 2001 Feb 16;1:38. doi: 10.1100/tsw.2001.140. eCollection 2001.