David

Chordoma: the nonsarcoma primary bone tumor.

Scott M Schuetze, Laurence H Baker, David R Lucas, 2007, The oncologist.

Hemoglobin Switching During Murine Embryonic Development : Evidence for Two Populations of Embryonic Erythropoietic Progenitor Cells

S. Chung, P. Wong, D. Chui, 2005 .