TY  - RPRT
TI  - Differences between dental health data obtained by interviews and questionnaires.
AU  - P W Norheim
AU  - L A Helöe
PY  - 1977
DO  - 10.1111/j.1600-0528.1977.tb01623.x
UR  - https://pubmed.ncbi.nlm.nih.gov/266431/
ID  - 266431
ER  -