PT - JOURNAL ARTICLE AU - Hamilton, J C TI - A rapid simplified method for plasma 25-hydroxyvitamin D estimation. AID - 10.1136/jcp.33.2.197 DP - 1980 Feb 01 TA - Journal of Clinical Pathology PG - 197--199 VI - 33 IP - 2 4099 - http://jcp.bmj.com/content/33/2/197.short 4100 - http://jcp.bmj.com/content/33/2/197.full SO - J Clin Pathol1980 Feb 01; 33