PT - JOURNAL ARTICLE AU - T. K. With AU - Tove Dreyer Petersen AU - Birgit Petersen TI - A simple spectrophotometric method for the determination of urea in blood and urine AID - 10.1136/jcp.14.2.202 DP - 1961 Mar 01 TA - Journal of Clinical Pathology PG - 202--204 VI - 14 IP - 2 4099 - http://jcp.bmj.com/content/14/2/202.short 4100 - http://jcp.bmj.com/content/14/2/202.full SO - J Clin Pathol1961 Mar 01; 14