TY  - RPRT
TI  - Pulse oximetry: principles and limitations.
AU  - J E Sinex
PY  - 1999
DO  - 10.1016/s0735-6757(99)90019-0
UR  - https://pubmed.ncbi.nlm.nih.gov/9928703/
ID  - 9928703
ER  -