TY  - RPRT
TI  - The 16 to 20 study.
AU  - M Craft
AU  - R Croucher
AU  - G M Bowstead
PY  - 1980
DO  - 10.1038/sj.bdj.4804409
UR  - https://pubmed.ncbi.nlm.nih.gov/6928781/
ID  - 6928781
ER  -