TY  - RPRT
TI  - Bleaching teeth--which way is best?
AU  - Gordon J Christensen
PY  - 2003
DO  - 10.1111/j.1708-8240.2003.tb00182.x
UR  - https://pubmed.ncbi.nlm.nih.gov/12859110/
ID  - 12859110
ER  -