TY  - RPRT
TI  - A comparison of two methods for estimating bone loss.
AU  - C Christiansen
AU  - P Rodbro
AU  - B Drewsen
PY  - 1976
DO  - 10.1111/j.0954-6820.1976.tb08234.x
UR  - https://pubmed.ncbi.nlm.nih.gov/983797/
ID  - 983797
ER  -