TY  - RPRT
TI  - Lower first premolar extraction: a viable alternative?
AU  - O W Clifton
PY  - 1986
DO  - 10.1016/0889-5406(86)90048-x
UR  - https://pubmed.ncbi.nlm.nih.gov/3461708/
ID  - 3461708
ER  -