TY  - RPRT
TI  - Is there an optimal hemoglobin level?
AU  - A J Erslev
AU  - J Caro
AU  - S J Schuster
PY  - 1989
DO  - 10.1016/s0887-7963(89)70084-5
UR  - https://pubmed.ncbi.nlm.nih.gov/2520557/
ID  - 2520557
ER  -