TY  - RPRT
TI  - Orthodontic external root resorption--endodontic considerations.
AU  - A L Frank
PY  - 1984
DO  - 10.1016/s0099-2399(84)80164-8
UR  - https://pubmed.ncbi.nlm.nih.gov/6590753/
ID  - 6590753
ER  -