TY  - GEN
AU  - Helfer,Allen
TI  - To revise or retreat--your choice
SN  - 0099-2399
PY  - 2003///0304
KW  - Humans
KW  - Retreatment
KW  - Root Canal Therapy
KW  - Terminology as Topic
N1  - Publication Type: Letter
UR  - https://doi.org/10.1097/00004770-200212000-00001
ER  -