TY  - RPRT
TI  - A rapid simplified method for plasma 25-hydroxyvitamin D estimation.
AU  - J C Hamilton
PY  - 1980
DO  - 10.1136/jcp.33.2.197
UR  - https://pubmed.ncbi.nlm.nih.gov/7364955/
ID  - 7364955
ER  -