Figure 1.

Photograph of bone marrow (BM) aspiration needle showing (A) stylet, (B) needle, (C) aspiration holes, and (D) centimeter marks used to measure 2 cm distance from the ventral cortical surface of the sternum.

Photograph of bone marrow (BM) aspiration needle showing (A) stylet, (B) needle, (C) aspiration holes, and (D) centimeter marks used to measure 2 cm distance from the ventral cortical surface of the sternum.