TY  - RPRT
TI  - [Standardization was never been verified].
AU  - G Sørensen
AU  - I Aarup
AU  - H Friis
AU  - B Sandager
AU  - H Hjort
AU  - T Jakobsen
PY  - 1979
UR  - https://pubmed.ncbi.nlm.nih.gov/259355/
ID  - 259355
ER  -