TY  - RPRT
TI  - The finger-tip unit--a new practical measure.
AU  - C C Long
AU  - A Y Finlay
PY  - 1991
DO  - 10.1111/j.1365-2230.1991.tb01232.x
UR  - https://pubmed.ncbi.nlm.nih.gov/1806320/
ID  - 1806320
ER  -