TY  - RPRT
TI  - Class II, division 2 malocclusion--nonextraction.
AU  - S A Hershcopf
PY  - 1990
DO  - 10.1016/0889-5406(90)70109-p
UR  - https://pubmed.ncbi.nlm.nih.gov/2333851/
ID  - 2333851
ER  -