TY  - RPRT
TI  - Standard deviations and standard errors.
AU  - Douglas G Altman
AU  - J Martin Bland
PY  - 2005
DO  - 10.1136/bmj.331.7521.903
UR  - https://pubmed.ncbi.nlm.nih.gov/16223828/
ID  - 16223828
ER  -